The outermost extraembryonic membrane that eventually helps form the placenta is the
A. amnion.
B. chorion.
C. yolk sac.
D. hypoblast.
B
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Cytokinesis
A) completes the process of mitosis. B) usually begins after telophase. C) separates the daughter cells after mitosis. D) is the last phase of mitosis. E) All of the answers are correct.
Renal tubule cells in the kidney medulla are constantly exposed to high extracellular osmolarity. How do they maintain normal cell volume?
A) They synthesize water molecules through increased metabolism to offset volume loss. B) They maintain a water-impermeable membrane. C) They add or remove aquaporins as needed. D) They synthesize organic solutes as needed to match the osmolarity.
The first menstrual period is called __________.
Fill in the blank(s) with the appropriate word(s).
The number of functional gametes produced by one mature egg follicle is
a. 1 b. 2 c. 4 d. 8