A mutation in the gene encoding for interleukin-3 would result in ________.
A. decreased numbers of circulating mast cells
B. inhibition of macrophage activation
C. inhibition of leukocyte proliferation
D. decreased conversion of B cells to plasma cells
Answer: A
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A) -NH2 B) -PO4 C) -COOH D) -SH E) -OH
After lymph leaves the collecting ducts, it enters _____ and becomes part of the ______
A) capillaries; blood supply B) veins; plasma C) lymph nodes; lymphatic trunks D) arteries; serum
In response to circulatory shock,
A. the body decreases ADH secretion. B. the renin-angiotensin mechanism is activated. C. atrial natriuretic factor is released. D. the vasomotor center is inhibited. E. the baroreceptors and chemoreceptors are inactivated.
A DNA molecule wraps around a cluster of histones to form which of the following?
a) nucleosome b) base pair c) ribosome d) nucleotide