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Marina CMI [18]
3 years ago
13

28. Which of the following statements are accurate?

Biology
1 answer:
padilas [110]3 years ago
8 0

Answer:

D. Viruses can avoid activating the adaptive immune system if they do not change their surface antigens once they have been recognized by T and B cells.

E. People who were affected with the smallpox virus before cowpox virus were naturally immune to the smallpox virus because the viruses shared some common antigens and the memory cells that recognized cowpox antigens responded to smallpox antigens as well.

F. Helper T cells can kill cells that are infected with viruses and Cytotoxic T cells are known to activate B cells.

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<h3><u>Answer;</u></h3>

All four organisms have exactly the same components in their DNA, but it varies in number and sequence

<h3><u>Explanation;</u></h3>
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  • <em><u>All living organisms store their genetic information using DNA molecules or RNA molecules. Most organisms contains DNA that have similar components, however their DNA will differ in number and also the sequences. </u></em>
  • <em><u>The similarity between the molecules of DNA indicates a common ancestry among organisms. </u></em>
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4 years ago
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6 0
3 years ago
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What is a non example of plate tectonics?<br>PLEASE HELP!​
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hello Prokaryotes are unicellular organisms that lack organelles or other internal membrane-bound structures. Therefore, they do not have a nucleus, but, instead, generally have a single chromosome: a piece of circular, double-stranded DNA located in an area of the cell called the nucleoid.

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