Suppose you were interested in the effect of breastfeeding versus formula feeding on the composition of gut flora in newborns. As part of your experiment, stool samples from healthy babies in the study get plated on various agar media. You notice that greater numbers of colonies are recovered when samples are plated on blood agar compared to nutrient agar (NA). After some diligent subculturing, you isolate several bacterial species capable of slow growth on the blood but not on the NA. You correctly surmise that these organisms: ______________

a. are opportunistic blood pathogens.
b. have extensive and complex nutritional requirements not met by NA are inhibited by the ingredients in NA.
c. should be classified as beta-hemolytic.
d. grow because the blood agar suppresses the growth of faster-growing bacteria.

Answers

Answer 1

Answer:

vAurora

Explanation:


Related Questions

Why is it essential for SARS-CoV2 RNA be translated on ribosomes before it can be replicated?

Answers

The SARS-CoV-2 non-structural protein 1 (Nsp1), also referred to as the host shutoff factor, suppresses host innate immune functions. By combining cryo-electron microscopy and biochemistry, we show that SARS-CoV-2 Nsp1 binds to the human 40S subunit in ribosomal complexes, including the 43S pre-initiation complex and the non-translating 80S ribosome. The protein inserts its C-terminal domain into the mRNA channel, where it interferes with mRNA binding. We observe translation inhibition in the presence of Nsp1 in an in vitro translation system and in human cells.

The purpose of using nitrocellulose for a western blot is to a. allow the proteins to be concentrated onto the face of the nitrocellulose where they will be accessible to the primary antibody b. to allow the 4-chloro-1-naphthol to react and be visible c. allow the various proteins to migrate and separate d. bind to the primary antibody

Answers

Answer:

a. allow the proteins to be concentrated onto the face of the nitrocellulose where they will be accessible to the primary antibody

Explanation:

No.3 plzz ...?
Any one ​

Answers

2^n=32

n=5

It doesn't really match up with the options so not sure, my best guess would be either choosing 16 or 4. 16 in case the person calculated as 16 times 2 = 32 and 4 bc its the closest.

Is Brewer's yeast a type of bacteria

Answers

Explanation:

Brewer's yeast is an ingredient used in the production of beer and bread. It is made from Saccharomyces cerevisiae, a one-celled fungus. ... Brewer's yeast is considered a probiotic and is used to aid digestion.

Answer:

Well Brewers Yeast is actually a Probiotic, and well a bacteria as well,

but its a good bacteria.

Explanation:

Look at the branching tree diagram below.

A slanting, horizontal line is shown. On the extreme left, there is a label that says Common Ancestor. Along the slanting, horizontal line there are five dots labeled from left to right with the following traits Four limbs, Amniotic egg, Fur, Shearing teeth, and Retractable claws. There is one vertical line between each of the consecutive five dots. The lines are labeled from left to right as Amphibians, Reptiles, Marsupials, Dogs, Cats.

Which group of organisms evolved after dogs?

Only cats
Only marsupials
Both cats and marsupials
Both amphibians and reptiles

Answers

Answer:

both cats and marsupials

Answer:   Both Amphibians and Reptiles

Explanation: I took the test and got it, so.....

Why making anti-viral medicines is harder than making anti-bacterial medicines ?

Also Is Virus a living parasites?​

Answers

Answer:

Making anti-viral drugs is more difficult than making anti-bacterial medicines because viruses have very few biochemical mechanisms of their own. They make use of host machinery which replicates. So it is very much difficult to find the targets where these drugs get interfered by not making any harm to the host. Thus, it is not easy to design an antiviral drug with high safety and effectiveness.

Explanation:

And i would say virus is a parasites but not a living parasite according to md

Answer:

Because antivirals can damage host cells where the viruses reside.

I hope this helps

all viruses are obligate parasites,that is they lack metabolic machinery of their own to generate energy or to synthesize proteins,so they depend on host cells to carry out these vital functions...

Use an examples to distinguish dominant and recessive phenotypes.
I'm a bit stuck and need some help. Much appreciated!

Answers

Think recessive phenotypes as paper and dominant phenotypes as teared paper. Once paper is teared, it can't be fixed. Not even tape. It'll just leave that mess exposed. Same with dominant phenotypes. It just takes one dominant trait to change the looks of future offspring.

If you don't tear the paper, everything is fine. Same with recessive phenotypes. As long as there's no contact with any dominant phenotypes, the looks of future offspring will change.

What is one condition that must be met for a population to be in genetic equilibrium?

Answers

Answer:

Hardy-Weinberg equilibrium

Explanation:

In order for the population's gene pool frequencies to remain constant, the Hardy-Weinberg equilibrium must be met. Random mating, no mutation, migration, or natural selection must all be present, as well as a big sample size.

OAmalOHopeO

At the time Hutton proposed his ideas about the age of rocks, how old was Earth believed to be by most people in Scotland?

Answers

Answer:

In the late eighteenth century, when Hutton was carefully examining the rocks, it was generally believed that Earth had come into creation only around six thousand years earlier (on October 22, 4004 B.C.

James Hutton was a Scottish naturalist and geologist who discovered the age of the earth. The earth was believed to be 6000 years old by the Scottish people.

Who was James Hutton?

James Hutton is the father of modern geology and was involved in the discovery of the earth's age and the soil formation from the parent rocks. He made his contribution to discovering the age of Earth based on his observation rather than on assumptions.

Before he discovered the earth age, it was believed by the Scottish people that the planet was six thousand years old. He discovered the process of soil formation by weathering the parent and bog rocks that accumulated as sediments over years and allowed the discovery of the planet's age.

Therefore, it is believed that the earth was 6000 years old.

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Why ulva is not placed in kingdom plantae

Answers

Answer:

Because Ulva is an algae. Algae belongs to kingdom Protista.

Explanation:

Ulva is a Macroalgae because it's not microscopic.

Macroalgae is not considered as a plant due to their structure. Macroalgae do not have specialized organs and tissues, and they are not vascularized. They also do not have the capacity to form a structure with flowers, leaves, roots or a stem.  

Identify parts A and C.​

Answers

Answer:

A. Liver B. Stomach

Explanation:

Liver detoxifies chemicals and metabolize drugs, stomach mixes the food and grind it

A: Liver

C: Stomach

hope it helps!!!!

Explain what will happen to your eyes when..
a) you move in a very bright light.
b) you move in a dim light​

Answers

Answer:

For A your pupils will shrink for B your pupils will dilate.

Answer:

When you look at something that is bright, your pupil may shrink.

When you look at something dim, your pupil may get larger.

Explanation:

I think your pupil may get larger if you look at dim light because your eye may have a hard time seeing what's going on. And the opposite may happen when you look at bright light.

Kể tên các biện pháp đấu tranh sinh học. Cho ví dụ. Biện pháp đấu tranh sinh học có những ưu điểm gì?

Answers

Answer:

means translate in English . if I can help I will.

Which is a possible outcome of global warming?
A. Hurricanes and other extreme weather will increase
B. Most crops will grow better in warmer climates
C. Sea levels will drop all around the world
D. Disease will not be able to spread as quickly

Answers

Answer is A While hurricanes are a natural part of our climate system, recent research suggests that there has been an increase in intense hurricane activity in the North Atlantic since the 1970s. In the future, there may not necessarily be more hurricanes, but there will likely be more intense hurricanes that carry higher wind speeds and more precipitation as a result of global warming.

A possible outcome of global warming is that hurricanes and other extreme weather events may increase. Therefore, the correct statement is option A.

What causes an increase in the temperature of Earth?

The gradual rise in the Earth's atmosphere's average temperature that results from the buildup of greenhouse gases, primarily carbon dioxide, released by human activities like the burning of fossil fuels and deforestation is known as global warming.

The Earth's climate and weather patterns may alter as a result of this temperature rise, which might result in more frequent and severe weather events like hurricanes, floods, and droughts.

Due to alterations in precipitation patterns, increased pest pressure, and other factors, it is unlikely that most crops will grow more effectively in warmer climates. Because of the melting of glaciers and ice caps, sea levels are more likely to increase, resulting in floods in low-lying places.

Therefore, a possible outcome of global warming is that hurricanes and other extreme weather events may increase.

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Which hair is Is constitute about two third of the hair of women , one tenth of the hair of men, and all of the hair of children?

Answers

Answer:

vellus

Explanation:

The villus hair is also called as the peach fuzz refers to a fine thin and light-colored hair. It covers the majority of body parts such as face, stomach, legs and arms. This hair tends to be very short and has a length of 2mm.

Which prediction is true based on this population pyramid?

The population is not growing.


The population is growing slowly.


The population is growing rapidly.


The population is declining.

Answers

I would say the population is growing slowly.

Hopefully that’s right.

In meiosis, sister kinetochores are attached to the same pole of the cell during meiosis I, and sister chromatid cohesion is released during anaphase II. What would be the likely result if sister kinetochores were attached to different poles of the cell during meiosis I and sister chromatid cohesion was released during anaphase I

Answers

Answer:

sister chromatids would migrate to opposite poles in anaphase I

Explanation:

Kinetochores are multiprotein structures that establish the attachment of spindle microtubules to the chromatids during cell division (either mitosis or meiosis). Sister chromatid cohesion at the centromeres refers to the mechanism by which sister chromatids are paired and held together during meiosis I. This process (sister chromatid cohesion) is fundamental to ensure the correct orientation of chromatids on the spindle microtubules and their subsequent segregation in meiosis II. The fusion of sister kinetochores in meiosis I underlies sister chromatid cohesion during this stage of the cell division, thereby their disruption or destruction of sister chromatid cohesion would lead to separation and segregation of sister chromatids to opposite poles of the cell in anaphase I.

what is the term for female reproductive cell ?

Answers

Answer:

female reproductive call are called ova

Egg is the term for a female reproductive cell.

What can young people do about climate change?

Answers

spread the word, avoid plastic, use organic stuff

Observe and record the seeds, roots, stems, leaves, flowers of mustard and maize plants and the difference in propertiesCheck it out​

Answers

Answer:

Maize is monocot and fibrous roots whereas mustard is dicot and tap roots system.

Explanation:

The main difference between maize plant and mustard plants is that Maize is a monocot plant means only one cotyledon in their seed whereas Mustard are dicot which means having two cotyledons. Maize plant has a fibrous root system whereas mustard plant has tap root system. The leaves pf maize plant have parallel venation while on the other hand, the leaves of mustard having reticulate venation. The seeds of maize is bigger in size as compared mustard seed.

What are the pigments in cyanobacteria used for?

Answers

Answer:

Pigments are useful to plants and other autotrophs

Explanation:

Not sure, but hope this helped a bit

Skin cells are lost daily even without injury. The cell cycle responds by promoting
a. reproduction.
b. repair.
c. synthesis.
d. growth.

Answers

Answer:

The correct answer is A

Hope it helps! Please mark me Brainliest!

The cell cycle responds to the daily loss of skin cells skin promoting reproduction. Details about reproduction can be found below.

What is reproduction?

Reproduction in biology refers to the process of making copies or duplicate of a cell.

According to this question, skin cells are lost on a daily basis even without injury.

However, the cell cycle through the process of mitosis responds to this loss by making more copies of skin cell in a process of reproduction.

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What makes people fight for their humanity in spite of horrendous challenges?

Answers

Answer:

They believe that they should have free will and in their mind they know that if they don`t fight then they can never feel like they belong on this earth and they would do whatever it takes to show people that they have a voice and that it should never be silenced but always be heard. People know even if there are challenges it shows that have got courage to overcome it and get to a better place in life.

Explanation:

In the electron transport chain

protons are pumped into the intermembrane space

water is split into oxygen and hydrogen

electrons combine with oxygen to form carbon dioxide,carbon dioxide

combines with water to form glucose

Answers

In the electron transport chain, protons are pumped into the intermembrane space.

1. Assertion: Mother may be a carrier for haemophilia.
Reason: The father is always a carrier for haemophilia.
(a) Both Assertion and Reason are true and the Reason is a correct explanation of the Assertion.
(b) Both Assertion and Reason are true but the Reason is not the correct explanation of the Assertion.
(c) Assertion is true, but the Reason is false.
(d) Assertion is false, but the Reason is true.

Answers

Answer:

c

Explanation:

The assertion is true,but the reason is false because the mother is the carrier.

I hope this helps

For the numbered steps below, select the option that places them in the correct order. 1) The ribosome binds to the mRNA and uses tRNAs to translate mRNA into the corresponding amino acid polypeptide sequence. 2) The spliceosome removes introns. 3) The primary structure of the polypeptide chain undergoes hierarchical foldings to form the tertiary structure. 4) RNA polymerase binds to the promoter region of a gene and initiates transcription.

Answers

Answer:

first 4, then 2, then 1, and lastly 3

Explanation:

First, RNA polymerase binds to the promoter region of a gene on the DNA and initiates transcription. Transcription is the process by which we get mRNA (coding RNA) which is used as a template for protein synthesis. Then, in transcription, the resulting mRNA undergoes modification and maturation. This  involves removal of introns, addition of 3'-poly-A tail and 5'-cap. Introns are sequences that do not code for protein and are hence removed. The structure that removes introns is the spliceosome. Thirdly, mature mRNA travels to the cytoplasm. Ribosome (composed of rRNA) binds to mRNA and tRNA to start the process of protein synthesis. The process of formation of protein is called translation. Lastly, the primary structure of protein may undergo folding to form a tertiary structure.

where's ATP produced in a cell and how?​

Answers

The energy released during respiration is stored in the form of compounds called ATP molecules. They are produced by the enzyme ATP synthesis which converts ADP to ATP. It is located in the membrane of the cellular structures called mitochondria.

Answer:

Most of the ATP in cells is produced by the enzyme ATP synthase, which converts ADP and phosphate to ATP. ATP synthase is located in the membrane of cellular structures called mitochondria; in plant cells, the enzyme also is found in chloroplasts.

Explanation:

BRAINLIEST PLZ

Visible light comes from which one of the sun's layers?
O A. The radiative zone
B. The corona
C. The convection zone
D. The photosphere
O E. The core

Answers

Answer:

The correct answer is photosphere.

Explanation:

Visible light comes from the layer known as the photosphere.

The Sun's photosphere is the layer that emits visible light. The Sun's atmosphere has seven layers: The core, or the Sun's interior.  The radiative zone. The convective zone. The photosphere or the visible surface. The Chromosphere. And the corona, the outermost layer.

Visible light comes from one of the sun's layers called the photosphere, which is in option D, as the photosphere is the visible surface of the sun and is the layer from which most of the sun's visible light is emitted.

The sun consists of several layers, and each layer is with distinct characteristics. such as the innermost region, have the core, followed by the radiative zone, the convection zone, the photosphere, the chromosphere, and finally, the outermost layer called the corona. In the core, nuclear fusion takes place, and as a result, enormous energy is released.

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*EARTH SCIENCE CLASS*

1. Scales are used to figure out the ratio of the distance in the map to the actual distance between locations.

A. what is the name of two different types of scales found on maps?

B. how does each scale work?

Answers

Answer:

Bar and lexical.

Explanation:

Bar and lexical are the name of two different types of scales that are found on maps. Bar scales are used more frequently in the maps because they represent or show the distance ratio visually instead of in words, while on the other hand, lexical scales may be expressed in words, as a ratio, or as a fraction. Examples are 1:10,000 or 1/10,000. Using map scales is very important in the real world if you want to find out the distance you are traveling.

What are genetic crosses

Answers

Answer:

1:2:1 is the genetic crosses

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