In aerobic respiration, the electrons associated with the hydrogen atoms in glucose are ultimately
transferred to:
a. carbon in a series of steps.
b. oxygen in a series of steps.
c. NADH in a series of steps.
d. the mitochondrial membranes.
e. hydrogen ions.
B
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In plants, the gametes produced by a particular gametophyte are
a. always identical because they result from meiosis. b. always identical because they result from mitosis. c. sometimes identical because they result from meiosis. d. sometimes identical because they result from mitosis. e. never identical because they result from meiosis.
Characterize the structure and function of antigens
What will be an ideal response?
Both bacteria and fungi digest food by
A) ingesting previously decomposed molecules. B) forming food vacuoles through phagocytosis. C) secreting enzymes and then absorbing the smaller molecules. D) photosynthesis. E) eating only small organisms that they can engulf.
Answer the following questions true (T) or false (F)
1. Areas near the equator tend to be wetter because of the combination of ocean evaporation and rising air. 2. Both the taiga and tundra are known for having permafrost soils. 3. The North American prairie and the Russian "steppes" are both temperate grasslands.