In oogenesis, meiosis I occurs.
a. in early fetal life
b. at birth
c. just before ovulation
d. after ovulation but before fertilization
e. after fertilization
Answer: c. just before ovulation
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Which imbalance results when systemic arterial blood HCO3- levels drop significantly (below 22 mEq/liter)?
a) Metabolic alkalosis b) Metabolic acidosis c) Respiratory acidosis d) Respiratory alkalosis e) None of these choices
Two solutions are separated by a selectively permeable membrane. If solution A has a higher concentration of a nonpermeating solute than solution B, then __________.
A. the solute will pass down its concentration gradient from solution A to B B. the solute will pass down its concentration gradient from solution B to A C. water will pass down its concentration gradient from solution A to B D. water will pass down its concentration gradient from solution B to A E. neither the solute nor water will diffuse
Many vertebrates cope with hypoxia by
A) Enlarging the spleen. B) Making more red blood cells. C) Using an alternate respiratory pigment. D) Decreasing hematocrit.
What type of equilibrium is perceived as a gymnast does somersaults?
A. Dynamic equilibrium B. Static equilibrium C. Both of these answers are correct. D. Neither of these answers is correct.