Oogenesis produces
A) 4 secondary oocytes.
B) 4 ova.
C) 1 secondary oocyte and 3 ova.
D) 1 secondary oocyte and 2 or 3 polar bodies.
E) 4 ova and 2 or 3 polar bodies.
D
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In adults, the function of the yellow marrow is to ________
A) store adipose tissue B) form blood cells C) store calcium and phosphorus D) promote lengthwise growth in long bones E) decrease friction at joint surfaces
The two organ systems that work together to regulate most aspects of the body's water balance are
A) cardiovascular and respiratory. B) urinary and cardiovascular. C) digestive and cardiovascular. D) urinary and respiratory. E) digestive and respiratory.
Which of the following muscles would contract more forcefully?
A) a muscle receiving 5 action potentials per second B) a muscle receiving 10 to 15 action potentials per second
Sensitization to an allergen during the initial exposure leads to the production of large quantities of
A) antigen-antibody complexes. B) IgE antibodies. C) IgD antibodies. D) opsonins. E) Tc cells.