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sweet-ann [11.9K]
2 years ago
12

How do superantigens cause polyclonal activation of CD4T cells but yet those T cells are inefficient in eliminating infection Un

derstand the outcomes of primary immune deficiencies including SCID, defects in B cell production, DiGeorge Syndrome and chronic granulomatous disease.

Biology
1 answer:
xxMikexx [17]2 years ago
8 0

Answer:

Please see attachment

Explanation:

Please see attachment

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How do scientists identify the different minerals that are found in rocks?
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Explanation:

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Comparing amino acid sequences in proteins has been used to determine the relatedness of organisms. Below is a graphic that show
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Answer:

A) Species A and E are more closely related than either species are related to species D.

B) Between A and B = 99.1%

Between species A and C =97.5%

Between species B and C = 97.3%

Similarity in amino acids sequence reflects similarity in DNA sequence

C) Species A and E are most closely related

D) Species A and E have the most similarity in amino acid sequence, and hence DNA sequence.

Explanation:

A) The amino acid sequences of the protein, keratin, in species A and D has a difference of about 19 whereas species A and E have a difference of only 1. Therefore, it means that keratin in species A and D will have differences in structure whereas between species A and E, they would have almost the same structure.

Also, species D and E have a difference of 20 in their amino acids sequence, therefore, the structure of keratin in both species will have differences in structure.

B) Similarity between A and B:

450 - 4 = 446

In percentage: 446/450 × 100% = 99.1%

Similarity between A and C:

450 - 11 = 439

In percentage: 439/450 × 100% = 97.5%

Similarity between B and C:

450 -12 = 438

In percentage: 438/450 × 100% = 97.3%

The sequence of DNA of species determines their amino acid sequences because information in DNA is transcribed to RNA which are then used to make proteins. Therefore, if a species are very closely related, they are expected to have very similar genetic sequences and thus proteins too. This is reflected in similarity between amino acid sequences in their proteins.

C). Species A and E are most closely related.

D) Species A and E have only a single difference in their amino acids sequence for Keratin. This translates to about 99.7% similarity which is the highest among all the species compared. Therefore, species A and E are most closely related.

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Which statement best describes the term symbolism
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C.  A writer uses an object to resent significant ideas or qualities.

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How a person fits into a food web?
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im guessing we eat everything but don't get eaten

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