In humans, how many ova are produced from one primary oocyte?
A. 8
B. 2
C. 4
D. 1
Answer: D
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Which of the following statements best compares the two dominant lineages of modern angiosperms?
A. Monocots have only one pistil per flower whereas eudicots have three. B. Monocots have only one cotyledon whereas eudicots have two. C. Monocots are lycophylls whereas eudicots are euphylls. D. Monocots have only one stamen per flower whereas eudicots have six. E. Monocots are monophyletic whereas eudicots have multiple origins.
Identify two vitamins and two minerals, and provide a one-sentence explanation for the functions of
each. What will be an ideal response?
When a person drinks alcohol, the rate of urination increases. This suggests that antidiuretic hormone (ADH) may be affected by alcohol consumption in some way. Which of the following best accounts for the increase in urination?
A) Alcohol stimulates the release of ADH. B) Alcohol inhibits the release of ADH. C) Alcohol inhibits the binding of ADH to receptors in the nephron. D) Alcohol could inhibit ADH release or the binding of ADH to receptors in the nephron.
In DNA, the "rungs" between the two strands of DNA are formed from the
A. hydrogen bonds between nitrogen base pairs. B. covalent bonds between nitrogen base pairs. C. ionic bonds between the phosphate pairs. D. ionic bonds between the nitrogen base pairs. E. phosphodiester bonds between the deoxyribose sugars.