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The diffusion rate increases as a substance gets smaller, when equal-size samples of two colored substances were placed on an agar plate and allowed to diffuse for an hour. You may understand why larger cells would require extra assistance to transfer materials by studying cubes of various sizes.
Materials must be transported into and out of all biological cells across the plasma membrane. You may simulate how diffusion works in cells by soaking treated agar cubes in vinegar after infusing them with a pH indicator. When molecules travel from a region of higher concentration to a region of lower concentration, this process is known as diffusion. You can see how far the hydrogen ions have diffused by observing how the color of the agar cube changes as the hydrogen ions from the vinegar move into the cube. Although random molecular motion will continue to cause specific molecules and ions to alternately move between the agar cube and the vinegar solution, the overall concentrations will stay in equilibrium, with equal concentrations both within and outside the agar cube.
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Incomplete question given. The complete question is:
Equal-size samples of two colored substances where placed on an agar plate and allowed to diffuse for an hour. After studying the picture above, what conclusion can you draw regarding the effect of size (molecular weight) on the rate of
i) Molecular size does not affect the rate of diffusion.
ii) The larger the substance, the faster the diffusion rate.
iii) The smaller the substance, the faster the diffusion rate.
iv) Actually, conclusions cannot be drawn because no diffusion was observed.
Based on the picture it can be concluded that:
i) A small cell is better able to maintain homeostasis because it has a larger volume to surface area and, therefore, can have a more efficient exchange rate at its surface and less volume for diffusion to occur.
ii) A large cell is better able to maintain homeostasis because it has a smaller surface area to volume rate and, therefore, can have a more efficient exchange rate at its surface and less volume for diffusion to occur.
iii) A small cell is better able to maintain homeostasis because it has a larger surface area to volume ratio and, therefore, can have a more efficient exchange rate at its surface and less volume for diffusion to occur.
iv) A large cell is better able to maintain homeostasis because it has a larger volume to surface area and, therefore, can have a more efficient exchange rate at its surface and less volume for diffusion to occur.
The beaker to the right shows the bag after one hour immersed in NaOH. Noticing the change in color, what can you conclude?
i) Phenolphthalein diffused out of the bag, and that made the solution inside the bag turn pink.
ii) Both NaOH and phenolphthalein diffused across the membrane. The membrane pores are large enough for both substances to move across
iii) Water reacted with the phenolphthalein and changed its color to dark pink.
iv) NaOH diffused into the bag, raising the pH inside the bag and changing the color of the phenolphthalein. The pores on the membrane are not large enough for phenolphtalein to exit
In which test tube did the cells become crenate?
i) In the test tube containing water.
ii) In the test tube containing 1.8% NaCl.
iii) In none of them.
iv) In the test tube containing 0.9% NaCl.
The beaker to the right shows the bag after one hour immersed in the iodine solution. Noticing the change in colour, what can you conclude?
i) iodine diffused into the bag, changing the colour of the solution to blue-black. The pores on the membrane are not large enough for starch to exit.
ii) Both iodine and starch diffused across the membrane. The membrane pores are large enough for both substances to move across.
iii) Starch diffused out of the bag, and that made the solution outside change in colour.
iv) Water reacted with the iodine and changed its colour to dark blue.
Related Questions
Which of the following statements regarding membrane transport is false?
Specific proteins are needed to transport polar and charged solutes effectively across cell membranes.
Sugars are always transported by active transport rather than by facilitated diffusion carriers.
Small molecules can transport across the cell membrane, but large molecules like proteins, usually are not transported.
Special protein that form membrane channels are used to transport ions.
Answers
B. Sugars are always transported by active transport rather than by facilitated diffusion carriers. This statement is false.
While it is true that some sugars are transported across the cell membrane by active transport, which requires the expenditure of energy, other sugars can also be transported by facilitated diffusion, which is a passive process that does not require energy.
Facilitated diffusion uses specific protein carriers (facilitated diffusion proteins) that bind to the solute and change shape to allow the solute to diffuse across the membrane. These carriers are also specific to certain types of solutes.
The rest of the statements are correct. To effectively transport polar and charged solutes across cell membranes, specific proteins are required. Small molecules can cross the cell membrane, but large molecules, such as proteins, are usually not transported. Ions are transported using special proteins that form membrane channels.
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contrast the properties of the polysaccharides starch , cellulose and glycogen and relate these to their roles in the cells
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Starch, cellulose, and glycogen are all polysaccharides composed of glucose monomers. Starch is a storage polysaccharide found in plants, and it is composed of α-glucose units.
The properties of the polysaccharides starch , cellulose and glycogenStarch is the most abundant form of carbohydrate in the diet and it is a major energy source for many organisms. It is a component of plant cell walls and plays a structural role in plants. Starch is also used to store energy in plants and is broken down for energy production in animals.
Cellulose is also a storage polysaccharide found in plants, and it is composed of β-glucose units. Cellulose is the most abundant organic material on the planet and is a major component of cell walls in plants. It is also a component of the diet of some animals, but it is not easily digested. Cellulose plays an important structural role in plants and helps to provide support and rigidity to the cell walls.
Glycogen is a storage polysaccharide found in animals, and it is composed of α-glucose units. Glycogen is the main form of glucose storage in animals and is broken down for energy production.
It is also a component of cell walls in animals and plays an important role in energy storage and metabolism. It is also an important source of energy for muscle contraction and is important for maintaining blood glucose levels.
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Contrast The Properties Of The Polysaccharides Starch, Cellulose And Glycogen And Relate These To Their Roles In The Cell
Polysaccharides made of glucose monomers include starch, cellulose, and glycogen. Starch is a plant storage polysaccharide that is made up of -glucose units.
In plants, what functions do the polysaccharides starch and cellulose play?Plants produce two kinds of polysaccharides: cellulose and starch. However, their structures and functions are distinct. Cellulose serves as support and structure, whereas starch is primarily used for energy storage.
What function do polysaccharides play?In both animals and plants, the polysaccharides function as a structural organization. Polysaccharides also serve the following roles: They keep energy in living things. Multiple hydrogen bonds prevent water from entering the molecules, making them hydrophobic.
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Incomplete question:
contrast the properties of the polysaccharides starch , cellulose and glycogen and relate these to their roles in the cells
which of the following factors would tend to increase membrane fluidity? which of the following factors would tend to increase membrane fluidity? a greater proportion of unsaturated phospholipids a relatively high protein content in the membrane a lower temperature a greater proportion of saturated phospholipids
Answers
Answer:
Option 1: "a greater proportion of unsaturated phospholipids" would tend to increase membrane fluidity.
Membranes are composed of a lipid bilayer made up of phospholipids and other lipids. The fluidity of the membrane can be affected by the properties of the lipids in the bilayer.
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excretion is the process of removing wastes from the body. if the body is to operate as we expect it to, it must get rid of nonuseful substances produced during digestion and metabolism. which of the following is untrue with regards to excretion?
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Every organ system plays a direct role in excretion is untrue with regards to excretion.
What is excretion?
The process of eliminating wastes and surplus fluids from the body is known as excretion. It is one of the primary mechanisms through which the body maintains homeostasis. Although the kidneys are the primary excretory organs, numerous additional organs also expel waste. The big intestine, liver, skin, and lungs are among them. The excretory system is made up of all of these excretory organs, as well as the kidneys.
Other than the kidney, the roles of the excretory organs are listed below:
The large intestine removes solid wastes left behind from meal digestion.
Excess amino acids and toxins in the blood are broken down by the liver.
Sweat contains extra water and minerals, which the skin removes.
Water vapor and carbon dioxide are expelled by the lungs.
Hence, Organs of excretion make up the excretory system. They include the kidneys, large intestine, liver, skin, and lungs.
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Complete question:
Which of the following is untrue with regards to excretion?
1. Carbon dioxide, a by-product of cellular respiration, is carried in the blood to the lungs, where it leaves the body in exhaled air
2. The urinary system disposes of nitrogen-containing metabolic wastes, such as urea, in urine.
3. Every organ system plays a direct role in excretion.
4. The digestive system rids the body of indigestible food residues in feces.
What is the role of the SRY gene in humans?A. None of the answers is correct.B. It is located on the X chromosome and causes the X to pair with the Y chromosome during male meiosis.C. It initiates the X inactivation process in females.D. It is located on an autosomal chromosome and represses expression of autosomal genes in order to balance their expression level with genes on the X chromosome.E. It is located on the Y chromosome and initiates the developmental pathway toward the male phenotype.
Answers
The role of the SRY gene in humans E. It is located on the Y chromosome and initiates the developmental pathway toward the male phenotype.
The gene SRY (sex-determining region of the Y), located at the distal region of the short arm of the Y chromosome, is necessary for male sex determination in mammals. SRY initiates the cascade of steps necessary to form a testis from an undifferentiated gonad. The SRY gene encodes an HMG (High Mobility Group) protein which may act as a transcription factor by binding to double-stranded DNA and then bending the DNA. Mutations in SRY have been identified in some subjects with 46, XY pure gonadal dysgenesis.
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2. select hypothetical blood types and rh-factor designations for a parental (p) cross. challenge yourself to select ones that have heterozygous combinations. complete a punnett square to find out the probabilities of the first filial (f1) generation.
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Rh+ people include those who are homozygous dominant (DD) or heterozygous (Dd). Homozygous recessive individuals (dd) are Rh- (i.e., they do not have the key Rh antigens).
What is Rh Blood Types?As a tribute to rhesus, the Rh system was named. Since monkeys were initially employed in the study to produce the antiserum for blood sample type, click this icon to hear how the term before is pronounced. Your red blood cells will agglutinate if the antiserum does. To hear how the term before was said, click this symbol. Click on this symbol to hear the term before it said; if it doesn't, you are Rh- Even though this trait's genetic makeup is complex, a straightforward conceptual model with just two alleles, D and d, can typically predict how this trait is inherited. Rh+ people include those who are homozygous dominant (DD) or heterozygous (Dd). Homozygous recessive individuals (dd) are Rh- (i.e., they do not have the key Rh antigens).Only when a Rh+ man has a child with a Rh- mother will there be Rh type mother-fetus incompatibility. The two possible mating combinations with different risks are indicated below since a Rh+ father can have either a DD or Dd genotype. Regardless of the father's genotype, if the mother is Rh- and he is Rh+, doctors will act in accordance with their presumption that there would be an incompatibility issue.To Learn more About Rh+ people refer to:
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an individual with group ab blood does not have which of the following antigens present on their red blood cells?
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An individual with group ab blood does not have antigen "O" present on their red blood cells.
What do blood antigens do?Blood group antigens are either proteins or carbohydrates that are connected to various parts of the membrane of the red blood cell. For instance, carbohydrates are the ABO blood group's antigens. In a sequence of processes, enzymes catalyzes the conversion of sugar units, which results in their production.
What blood groups in the ABO system are there in humans?Red blood cells carrying blood group A antigens have anti-B plasma antibodies.Plasma from people with blood group B comprises anti-A antibodies and B antigens.Blood group O has both anti-A and anti-B antibodies in the plasma but no antigens.A and B antigens are expressed in blood group AB, however there are no antibodies.Learn more about antigen here:
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the america first action is a super pac led by former administrator of the small business administration linda mcmahon. which of the following best explains how the organization can operate to influence elections, according to the decision in citizens united v. federal elections commission (2010) ?
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The america first action is a super PAC led by former administrator of the small business administration linda mcmahon the organization can operate to influence elections, according to the decision in citizens united v. federal elections commission (2010).
In accordance with the ruling in Citizens United v. Federal Elections Commission (2010), a super PAC, such as America First Action, is permitted to operate to influence elections by raising and spending an unlimited amount of money from corporations, unions, and individuals, so long as the super PAC does not coordinate with any candidates or political parties. Independent expenditures, which are defined as spending not undertaken in collaboration with a candidate or political party, are allowed under the First Amendment, according to the opinion. Thus, America First Action, as a super PAC, is permitted to raise and spend as much cash as it wants on independent expenditures including advertising, community organising, and other election-related activities to support or oppose candidates for federal office.
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Read each of the sentences that describe a phase of meiosis. Place each sentence into the correct box.
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Homologous chromosomes pair to form a tetrad. - Prophase 1
Homologous chromosomes: What Are They?
Chromosome pairs that are homologous share the same size, shape, and gene loci. They are the paired chromosomes that are responsible for determining an organism's inherited traits and are located in the nucleus of somatic cells. They are additionally known as homologs. The development of genetic diversity depends on homologous chromosomes. Homologous chromosomes separate during meiosis to create gametes, which are the reproductive cells.It is possible for the non-sister chromatids to cross over. 1. ProphaseThe center of the cell is lined up with homologous chromosomes. The metaphaseHomologous pairs split apart and move to the cell's opposite ends. The anaphaseUpon the formation of a nuclear membrane, cytokinesis occurs. the Telophase.To learn more about Homologous chromosomes
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Complete Question:
Read each of the sentences that describe a phase of meiosis. Place each sentence into the correct box. with explanation.
Homologous chromosomes pair to form a tetrad.
Crossing-over may occur between the non-sister chromatids.
Homologous chromosomes line up at the center of the cell.
Homologous pairs separate and move towards opposite ends of the cell.
A nuclear membrane forms and cytokinesis follows.
The haploid number of duplicated chromosomes line up at the
metaphase plate.
Sister chromatids separate and become daughter chromosomes that move to the poles.
Four haploid daughter cells are formed that are not genetically identical.
Prophase 1
Metaphase
Anaphase and Telophase !
Meiosis 11
the species endemicity and richness increase or decrease with increasing of altitude?
Answers
Answer:
Research suggests that species endemism and richness generally increase with increasing altitude. This is because of the greater range of different habitats and niches available in higher altitudes, which provides more opportunities for species to specialize and develop local adaptations. Additionally, the climate in higher altitudes tends to be more extreme, creating more opportunities for species to evolve and diversify in response to the changing conditions.
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dna structure and replication review label each part of the dna below. write a short description of each.
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When two DNA bases, A with T and C with G, bind together, base pairs are created. Each base is also associated with a sugar and phosphate molecule.
A nucleotide is made up of three components: a base, a sugar, and phosphate. To produce a spiral known as a double helix, nucleotides are strung together in two long strands. Each DNA molecule is a double helix made up of two complementary strands of nucleotides joined by hydrogen bonds formed by G-C and A-T base pairs. When one DNA strand is utilized as a template for the creation of a complementary strand, genetic information is duplicated.
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Rank each state of water in order of increasing density, starting with the least dense state at the top of the list.
ice
water vapor
liquid water
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Rank each state of water in order of increasing density, starting with the least dense state at the top of the list. That is given below-
water vapor
ice
liquid
What is density?
How dense a substance is in a specific area is determined by its density. A density of material is defined as its mass per unit volume. It is essentially a measure of how tightly something is packed. It is a specific physical quality of a certain thing. The density principle was discovered by the Greek scientist Archimedes. Calculating density is easy if you are familiar with the formula and the necessary units. Instead of the symbol, the word "density" can be represented by the letter "D."
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roots, stems, and leaves of plants each are composed of various tissue such as xylem, phloem, epidermis, cortex, pith, and endodermis. Roots, stems, and leaves of plants should be considered to be a plant.
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Plants' roots, stems, and leaves are made up of diverse tissues such as xylem, phloem, epidermis, cortex, pith, and endodermis. Plant roots, stems, and leaves should all be considered plant organs.
Each plant organ comprises all three tissue types, although they are arranged differently in each organ. In dicot roots, the xylem and phloem of the stele are placed alternately in an X shape, but in monocot roots, the vascular tissue is arranged in a ring around the pith. Furthermore, monocots have fibrous roots, whereas eudicots have tap roots. Vascular bundles in dicot stems are organized in a ring toward the stem's periphery. The vascular bundles in monocot stems are randomly distributed throughout the ground tissue. There are two types of photosynthetic parenchyma cells in leaves (palisade and spongy). They, like all plant organs, have vascular tissue. The leaves of monocots have parallel veins of vascular tissue, whereas the leaves of dicots have branching or net-like veins of vascular tissue. So, the roots, stems, and leaves of plants are made up of a variety of tissues, including the xylem, phloem, epidermis, cortex, pith, and endodermis are all examples of plant organs.
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How would you distinguish the micromolecule and macromolecule
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A micromolecule is a small molecule with a molecular weight of less than 1000 daltons, while a macromolecule is a large molecule with a molecular weight of more than 1000 daltons.
Micromolecules are composed of a small number of atoms and include compounds such as sugars, amino acids, and nucleotides. They can be easily dissolved in water and do not require much energy to break apart. They also tend to be relatively stable and do not typically undergo significant changes in their structure.
Macromolecules, on the other hand, are composed of a large number of atoms and include compounds such as proteins, carbohydrates, and nucleic acids. They tend to be insoluble in water and require a significant amount of energy to break apart. They also tend to be less stable and are more prone to undergoing changes in their structure.
Another way to distinguish micromolecules and macromolecules is by looking at their chemical properties. Micromolecules are typically organic compounds, while macromolecules are typically polymers, composed of repeating units.
Therefore, the main difference between micromolecules and macromolecules is their size, macromolecules are larger than micromolecules, and their chemical properties, micromolecules are small organic compounds, while macromolecules are large polymers.
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In a simple monohybrid Punnett Square, which of the following statements are accurate when crossing a homozygous dominant parent with a heterozygous parent for any given trait?
Choose ONE correct answers.
A. 75% of the offspring will be homozygous dominant.
B. 25% of the offspring will be homozygous recessive.
C. All of the offspring will show the recessive phenotype.
D. None of the offspring will show the recessive phenotype.
E. 75% of the offspring will show the dominant phenotype.
Answers
you wish to bring in an example of a biofilm to the microbiology lab. which of the following represents the best choice for bringing in an intact biofilm for further study?
Answers
The best choice for bringing in an intact biofilms for further study is Disconnecting and bringing in the "float" from the toilet tank in your room in to the lab, which means option E is the right answer.
Biofilm refers to the microbial layer which is very thin in size, but has the capacity of forming a matrix like consistency which can cause degradation of the substance on which it is formed. For example: the formation of plaque on teeth by the action of bacteria. Such films generally develop on the moisture rid regions. This is the emerging field of study wherein such films are developed to act as protectant against certain diseases, in waste water treatment plants, and also for corrosion reduction.
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You wish to bring in an example of a biofilm to the microbiology lab. Which of the following represents the best choice for bringing in an intact biofilm for further study?
A. Scraping the mold off of the shower curtain in your bathroom into a paper cup using a clean butter knife and bringing the cup into the lab
B. Wiping a sponge across a slimy boulder from a local stream in a nearby park and bringing it into the lab
C. "Brushing" your teeth with a dry, clean toothbrush, placing it in a plastic bag and bringing it into the lab
D. Using a plastic spoon to collect from a soap dish in a fast-food restaurant, then smearing it onto a slide to bring into the lab
E. Disconnecting and bringing in the "float" from the toilet tank in your room in to the lab
. Why is immersion oil necessary at 1,000´ but not with the lower power objective?
Answers
Since the light refraction from lower power magnification microscope objective lenses, such as those with a 10X and 40X magnification, is insignificant and undetectable, oil immersion is utilized in microscopes for their maximum power objectives. However, with 100X magnification microscopes, light refracted is significant and high.
what is light refraction?Refraction in physics is the redirection of a wave as it travels through one medium and then another. A change in the medium or a change in the wave's speed might both result in the redirection.
what is magnification?Magnification is the process of enlarging something's apparent size rather than its actual size. This enlargement is measured in terms of a calculated quantity known as "magnification." The term "minification" or "de-magnification" is frequently used to describe a reduction in size when this number is less than one.
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How would the South America boa constrictor which eats amphibians be categorized in this ecosystem
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Scientists have spent many years studying the peppered moth, which is a species that has adapted its color from light to dark in reaction to environmental pollution. Which of the following line graphs represents the data from the table? (The solid lines on the graph represent dark moths and the dashed lines represent light moths). A. Figure A
B. Figure B
C. Figure C
D. Figure D None of the Graphs
Answers
It was eventually discovered that the colour was genetic. Moths bred new generations with their hue. Dark moth eggs became dark adults, while light moth eggs became light adults.
All of the moth's offspring carry the mutant gene, which resulted in the dark colour due to a mutation in the moth's DNA. Researchers have identified the precise mutation that caused moths to turn black during the Industrial Revolution. In a famous evolutionary case study, during the 1800s in industrial areas of the UK, a black version of the peppered moth quickly overran as soot darkened the tree trunks and walls of its habitat.
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if you need assistance on chi-square hypothesis testing for the question below, refer to the pre-lab activity of your lesson.
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Before running a chi-square test, make sure there are two categorical variables, two or more categories (groups) for each variable, and independent observations.
At least 80% of the cells should have an anticipated value of 5 or higher, and no cell should have an expected value of less than 1. Categorical variables are examined using the chi-square tests.You reject your null hypothesis if your estimated chi-square value exceeds the chi-square critical value. You "fail to reject" your null hypothesis if your estimated chi-square value is lower than the chi-square critical value. The predicted frequency must be at least 5 for the chi-square approximation to be accurate. Small samples cannot be used for this test, and you may need to combine certain tail bins if some counts are fewer than five.
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As the adrenal gland releases glucocorticoids, which of the following effects may be observed? Select all the answers that apply.Increased blood levels of amino acidsDecreased blood pressure and volumeDecrease in immune system functionLipid breakdown in the liver will increaseIncreased water absorption in the kidneyIncreased blood glucose levels
Answers
Decreased blood pressure and volume
Decrease in immune system function
Increased blood glucose levels
What are glucocorticoids?
Glucocorticoids are cholesterol-derived steroid hormones synthesised and secreted by adrenal gland. They are anti-inflammatory in all tissues, and control metabolism in muscle, fat, liver and bone. Glucocorticoids also affect vascular tone, and in brain influence mood, behaviour and sleep‒wakefulness cycles.
Types of Glucocorticoids
Among most common ones are: Cortisone: shot that can ease inflammation in our joints. Prednisone and dexamethasone: pills that treat allergies, arthritis, asthma, vision problems, and other conditions. Triamcinolone: cream that treats skin conditions.
Natural glucocorticoids, namely cortisone or hydrocortisone, cholesterol-derived hormones secreted by adrenal glands and are named after their roles in maintaining glucose homeostasis.
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jg200567 avatarjg20056704/28/2021BiologyHigh Schoolanswered • expert verifiedWhich of the following best describes Darwin's (and Wallace's) theory of evolution?Question 1 options:Organisms adapt during their individual lifetime and then pass on that adapted trait to their offspring.The different species appeared on our planet in a random fashion. There are no reasons for why animals are in the locations they are in or have the features they have.Galapagos finches have changed over time to get longer beaks to be able to eat the seeds on the islandThe diversity of life on our planet comes from the process of evolution supported by the mechanism of natural selection.
Answers
The option that best describes Darwin's theory of evolution, is option A: organisms adapt during their individual lifetime and then pass on that adapted trait to their offspring.
Darwin suggested the theory of natural selection according to which:
there is a great deal of variety among individual organisms within a single species, and those with traits best adapted to their environment have a higher chance of surviving and reproducing.the traits that have helped these people survive are then passed on to the following generation.Thus, option A marks the right choice.
During his five-week expedition to the Galapagos Islands, which are located in the Pacific Ocean close to Ecuador, Darwin saw a wide variety of creatures, including finches, tortoises, and mockingbirds. Once he got back from his travels, he kept working and developing his ideas. Darwin's theory of evolution by natural selection posed a challenge to the notion that all the plants and animals that exist today were created by God.
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The main difference between the different categories of signaling is the distance that the signal travels through the organism to reach the target cell. True Or False
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It is true that the main difference between the different categories of signaling is the distance that the signal travels through the organism to reach the target cell.
What is organism?
Organism is an individual living being, such as an animal, plant, fungus, or microorganism. Organisms are capable of growth, reproduction, and maintaining a stable internal environment to respond to changes in their external environment. They are also capable of responding to stimuli, adapting to their environment, and undergoing metabolism and energy production to sustain themselves.
Therefore, It is true that the main difference between the different categories of signaling is the distance that the signal travels through the organism to reach the target cell.
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explain how the loss of Arctic sea ice may affect the ocean currents and climate near the Western European coast.
Answers
Answer:
The cold tide may well slow down the Atlantic currents that bring warmth to Western Europe.
Explanation:
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Which of the following is not a clinical symptom of the lesion of the upper motor neuron?
1) Involuntary muscle contractions
2) Slow-slurred speech
3) Extension of the hallux
4) None of the above
Answers
Answer:
Nin of dhevy izvsh aibwvsu kzbsix uscsudbdd
Involuntary muscle contractions, slow-slurred speech, and extension of the hallux, all are symptoms of the lesion of the upper motor neuron. Therefore, option D is correct.
A lesion of the upper motor neuron refers to damage or dysfunction in the neural pathways that carry signals from the brain to the spinal cord. This type of lesion can occur due to various causes, such as stroke, traumatic brain injury, multiple sclerosis, or certain neurodegenerative disorders.
The affected individual may experience weakness or difficulty controlling voluntary movements, often on one side of the body.
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Identify the example of natural selection below.
A. Dogs that have a desirable coat color are bred with one another to produce puppies with the same coat color.
B. Farmers crossbreed two types of cows to produce a breed of cow that has high quality beef and can tolerate a
hot climate.
C. Giraffes that have longer necks survive a dry season by eating leaves from the tops of trees. Those giraffes
breed more successfully that year.
Answers
Dogs that have a desirable coat color are bred with one another to produce puppies with the same coat color
What is Natural selection?Natural selection is the process through which populations of living organisms adapt and change. Individuals in a population are naturally variable, meaning that they are all different in some ways. This variation means that some individuals have traits better suited to the environment than otherFor example, evolving long necks has enabled giraffes to feed on leaves that others can't reach, giving them a competitive advantage. Thanks to a better food source, those with longer necks were able to survive to reproduce and so pass on the characteristic to the succeeding generationThe mechanism that Darwin proposed for evolution is natural selection. Because resources are limited in nature, organisms with heritable traits that favor survival and reproduction will tend to leave more offspring than their peers, causing the traits to increase in frequency over generations.
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11. According to the photo capture data, which 6 animals are most represented in the data? Be sure to
list the name of the species and the number of photo captures.
Answers
Then, click Data > From Picture > Picture From File and follow the on-screen instructions to convert picture to data.
Photo capture data, which 6 animals are most represented in the data?
The greatest show on earth. The great Serengeti wildebeest migration is the movement of vast numbers of the Serengeti's wildebeest, accompanied by large numbers of zebra, and smaller numbers of Grant's gazelle, Thomson's gazelle, eland and impala.All animals are eukaryotic, multicellular organisms, and almost all animals have specialized tissues. Most animals are motile, at least during certain life stages. Animals require a source of food to grow and develop.The Big Five in the Serengeti. The Big Five define that ultimate African safari experience: seeing these impressive animals - lion, rhino, leopard, elephant and Cape buffalo - roaming freely in their own habitat is something you will never forget.To learn more about animals refers to;
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All of the following are Lancefield carbohydrate antigens found on beta hemolytic Streptococcus species. All of the following antigens are found on organisms from the Streptococcus anginosus group EXCEPT:ABCD
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Group B antigens are not found on organism from the streptococcus anginosus.
Catalase-negative Gram-positive cocci are categorized using the Lancefield grouping system based on the carbohydrate makeup of the bacterial antigens present on their cell walls.
The system, developed by Rebecca Lancefield, was once used to classify the various members of the family Streptococcaceae, which includes the genera Lactococcus and Streptococcus. However, it is now largely superfluous due to the rapid increase in the number of streptococcal species discovered since the 1970s.
Even after the taxonomic modifications, it still had some clinical utility, and as of 2018, Lancefield labels are frequently used to convey the findings of medical microbiological tests.
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you are caring for a laboring, multiparous client in the second stage of labor without an epidural. of the following, which should be included in your education?
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The foetus is delivered during the second (rather than the fourth) stage of labour. The placenta is delivered at the third (rather than fourth) stage of labour.
when will epidural for labor are administered ?
If you choose for an epidural, an anesthesiologist will implant a needle and a thin tube known as a catheter into the bottom area of your back. The needle is removed, but the catheter is left in place for medication delivery through the tube as needed. In consultation with your doctor, you can start an epidural at any point during your labour — at the beginning, the middle, or even near the end.
Not only are the mother and baby healing from the physical process of delivery, but they are also getting to know one other and other family members. The foetus is delivered during the second (rather than the fourth) stage of labour. The placenta is delivered at the third (rather than fourth) stage of labour.
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Which of the following statements is TRUE for specific gravity measured by the urine chemical reagent strip method?The urine chemical reagent strip method is not affected by the presence of x-ray contrast media in the urine specimen.
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The urine chemical reagent strip method is not affected by the presence of x-ray contrast media in the urine specime
What is specific gravity ?Specific gravity, often known as relative density, is the ratio of a substance's density to that of a certain reference material. For gases, the reference is air at room temperature, specific gravity for liquids is almost commonly calculated in relation to water at its densest state.
Typically, a hydrometer is used to determine the specific gravity. In the liquid sample, the hydrometer is slightly submerged, and the reading on the scale at the air-water junction point is noted.
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