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Naily [24]
3 years ago
5

How does the structure of the alveoli allow for its function of gas exchange?

Biology
1 answer:
DanielleElmas [232]3 years ago
5 0

Answer:

The correct answer would be D.Alveolar sacs are surrounded by thin capillaries where gases can be exchanged.

Alveoli are tiny sacs which form the site of gas exchange in the lungs.

The features of alveoli which help in gas exchange are:

  • They increase the surface area in the lungs thus, more space is available for gas exchange.
  • They have very thin walls, as thin as the thickness of a single cell only.
  • They are surrounded by a bunch of thin capillaries which exchange gases with alveoli.

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In STR profiling, PCR is used to obtain enough DNA to then detect the number of STRs at I specific loci.​
Licemer1 [7]

PCR technique is important in STR profiling in order to amplify and detect the number of Stars at a specific gene loci.

<h3>What is Short Tandem Repeat (STR) profiling?</h3>

Short Tandem Repeat profiling is a technique in molecular biology used to compare allele repeats known as STRs at specific loci in DNA between two or more samples.

The PCR (polymerase chain reaction) technique used in STR profiling involves making multiple copies is a particular segment of DNA in order to make enough quantities detectable in the analysis.

Therefore, PCR technique is important in STR profiling to detect the number of Stars at a specific gene loci.

Learn more about PCR at: brainly.com/question/13252565

4 0
2 years ago
during replication, DNA _____. a. remains intact b. makes rna c. is copied d. directs protein synthesis
yanalaym [24]

You must just analyze the words. Replication is a synonym of copy, so the only possible answer is C.

Hope it helped,

Happy homework/ study/ exam!

6 0
3 years ago
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The INDEPENDENT VARIABLE:
klemol [59]

Answer:

B. Is what the scientists manipulate in the experiment.

Explanation:

The Independent variable is not dependent, or doesn't rely, on another variable in the experiment. So, it would make the most sense that they would manipulate the Independent so that they can watch and see how the dependent variable reacts to the manipulation, or the change, in the independent variable.

4 0
3 years ago
What is the function of tRNA
s344n2d4d5 [400]

Answer: The job of tRNA is to read the message of nucleic acids, or nucleotide and translate it into proteins, or amino acids .

Explanation:

8 0
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How does h2o and co2 get transported into the chloroplast?
mixas84 [53]

Answer:

<h2>The chloroplast is involved in both stages of photosynthesis. The light reactions take place in the thylakoid. There, water (H2O) is oxidized, and oxygen (O2) is released. ... In these reactions, the energy from ATP and NADPH is used to fix carbon dioxide (CO2).</h2>

Explanation:

<h2>hope this helps you</h2><h2>Mark my answer as brainalist</h2>
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