3. Which of the following is FALSE with respect to the amino acid composition of

Question

3. Which of the following is FALSE with respect to the amino acid composition of proteins? a. Proteins that are closely related by evolution tend to have similarities in their composition and sequence b. Proteins that are related by evolution have similar functions c. Amino acid sequnce (primary structure) vary between proteins that have different functions d. Proteins with the similar amino acid composition may not have similar functions. e. Proteins that contain more than one domain usually have more than one function

Explanation / Answer

HI Answer:

3. Which of the following is FALSE with respect to the amino acid composition of proteins?

Answer: Option B. (Proteins that are related by evolution have similar functions) is FALSE

Explanation: It is not necessary that the protein which is related to by evolution must have a similar function. This can be understood by the example of convergent evolution where homologous structures or traits have a common origin but can have dissimilar functions. Similarly in case of proteins which shows similarities but they have a specific function and they may have different amino acid sequence too.

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