B lymphocytes and the humoral response Quiz
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5 questions, one answer each
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1. Which cell secretes antibodies?
- A. Memory cell
- B. Plasma cell
- C. Phagocyte
- D. Cytotoxic T cell
2. Which part of an antibody is specific to an antigen?
- A. The constant region
- B. The disulfide bridge
- C. The hinge
- D. The variable region
3. Agglutination helps because:
- A. It digests the bacteria
- B. Antibodies clump bacteria so phagocytes engulf them more easily
- C. It makes holes in bacteria
- D. It prevents phagocytosis
4. Why is the secondary response faster?
- A. Memory cells divide rapidly to form plasma cells
- B. There are fewer antigens
- C. Antibodies are stored in plasma cells
- D. Phagocytes make antibodies
5. A person recovers from one strain of a virus but is ill with another strain. Why?
- A. The memory cells cannot divide
- B. The second strain has no antigens
- C. The new strain's antigens are not complementary to the existing memory cells
- D. Antibodies cannot bind to any virus