本题目来源于试卷: Interaction & Interdependence C.7 Defence Against Disease，类别为 IB生物学
[单选题]
Antibodies are proteins np22l 9n ysqcv,kd): kthat bind to an4+px1w xkaz. stigens. Which cell expresses the genes for aa xk+zp.wx14 sntibody production?
A. Plasma B cells
B. Macrophages
C. Helper T cells
D. Red blood cells
参考答案: A
本题详细解析:
Choice A - Antibodies are globular proteins synthesizh g*uxm7mt .l9x3m e2eed by plasma B cells. The genes associated with antibodyex*.l3mmum9th gex27 synthesis are expressed in plasma B cells.
Choice B - Macrophages do not synthesize antibodies and therefore do not express these genes. Macrophages are large phagocytic cells and present antigens to helper T cells.
Choice C - Helper T cells do not synthesize antibodies. They stimulate B cells to divide by mitosis to produce plasma B cells and memory B cells.
Choice D - Red blood cells do not have a nucleus and therefore do not have the genes for antibody synthesis.
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