During in utero (fetal) development of the ovary, which of these occurs?
A. Cell division of primary oogonia results in the production of 2 to 4 million primary oocytes, which are present at birth.
B. Cell division of primary oogonia, which all complete the first meiotic division before birth.
C. Cell division of primary oogonia, which all complete both meiotic divisions before birth.
D. The mitotic division of primary and secondary oocytes produces cells with 23 chromosomes each.
E. A single primary oogonium remains dormant, which then undergoes rapid mitosis after birth.
A
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Infoldings in the sarcolemma called __________ tubules conduct electrical currents to the interior of the cell.
Fill in the blank(s) with the appropriate word(s).
An acid reacting with a base is
A. hydrolysis. B. a synthesis reaction. C. a decomposition reaction. D. an exchange reaction.
The systemic circuit
A. brings oxygen-rich blood from the tissues. B. sends oxygen-poor blood to the heart. C. sends oxygen-rich blood to the tissues. D. brings oxygen-poor blood from the lungs.
If more glucose is consumed than is needed, the glucose can be
A. broken down to 2 NADH molecules that can enter the citric acid cycle. B. deaminated by the liver and sent to the kidney for excretion in the urine. C. converted to acetyl CoA that is then used to synthesize triglycerides for storage. D. converted to an essential amino acid so that protein synthesis can increase.