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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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 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.
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.
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