In humans, egg production (oogenesis) differs from sperm production (spermatogenesis) in that oogenesis
A. produces many more cells than spermatogenesis.
B. usually results in fertilization.
C. produces polar bodies.
D. occurs for the majority of a person's life.
C. produces polar bodies.
Biology & Microbiology
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Humoral immunity is mostly the function of
A. cytotoxic T cells. B. B cells. C. MHC I. D. complement cells. E. mast cells.
Biology & Microbiology
In mammals, the filtrate leaves the blood by exiting from the ____
a. efferent arteriole b. peritubular capillaries c. renal artery d. afferent arteriole e. glomerulus
Biology & Microbiology
A(n) __________ is an extracellular signaling molecule that exerts its effect at very low concentrations
Biology & Microbiology
Which of the following hormones is involved most directly in carbohydrate absorption?
1.gastrin
2.secretin
3.cholecystokinin
4.glucose insulinotropic peptide