What drives filtration in the kidney?
A. Blood pressure
B. Energy
C. Gravity
D. None of these are correct.
Answer: A
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The number of chromosomes in a secondary oocyte is
A. less than the number in a polar body. B. the same as the number in a mature sperm. C. greater than the number in a polar body. D. greater than the number in a mature sperm. E. less than the number in a mature sperm.
This figure shows the endocrine system. Which structure does number 4 indicate?
A. Adrenal gland B. Thyroid gland C. Pituitary gland D. Pancreas E. Hypothalamus
Which of the following is actively transported out of the loop of Henle?
A. Chloride ions B. Potassium ions C. Sodium ions D. Urea
The minimum energy required to start a chemical reaction
A. can be lowered by enzymes. B. is elevated by a catalyst. C. moves in energy surges. D. comes from ionic energy motion. E. results from random molecular movement.