Which one of the following steps would be included in the primary response in humoral immunity?A. Antigen binds to antibodies
B. Cytotoxic T cells bind to infected body cells and destroy them
C. Helper T cells activate cytotoxic T cells
D. A macrophage consumes a virus and displays antigens on its surface and signals helper T cells to divide.

Answers

Answer 1

Answer: The answer is letter A.

Humoral immunity is a situation in which antigen binds to antibodies. It is also called as the anitbody-mediated beta cellularis immune system that is found in the extracellular fluids (e.g. antibodies, complement proteins, antimicrobial peptides. Humoral immunity is mediated by macromolecules and is so named because it can be found in the humours or body fluids.

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Answers

The answer is student 1.
Student 1 said that RNA is not deoxyribose but ribose. Student 1 also noted that RNA do not contain thymine but contains Uracil.. It is very obvious that student 1 correctly noted the characteristics of an RNA.

NOTE: In RNA, the pentose sugar is ribose and not deoxyribose. RNA contains uracil in place of thymine.

See attached file for the table.

The answer is; student 1

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Answers

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