Digestion is ________
A) the absorption of nutrients
B) the breakdown of food into small nutrient molecules that the body can absorb
C) the churning of food in the stomach and intestine
D) eating
B
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When does the ? subunit dissociate from RNA polymerase?
A. after promoter clearance B. at the termination of transcription C. immediately after promoter binding D. immediately before promoter binding E. not until the enzyme is degraded
According to Hertz and Huey, which compensatory mechanism allows lizards living at high altitudes to survive lower
mean air temperatures?
a. hibernationb. torpor c. increased time spent basking d. increased consumption of food e. shelter-seeking behavior
In an experiment on wayfinding, indigo buntings were housed in outdoor cages with blotting paper
walls and inkpads on the floors. Which of the following facts demonstrated to researchers that the indigo bunting uses the positions of stars to orient its migration?
a. The birds' inky feet made prints indicating the direction in which they attempted to fly. b. In spring the inky footprints were mostly on the northern side of the cage. c. In fall the inky footprints were mostly on the south side of the cage. d. On cloudy nights the footprint patterns were random. e. In spring and fall, the anterior pituitary of the bird's brain generated a series of hormonal changes.
The carnivorous plant with two-sided leaves, each with highly sensitive trigger hairs for snapping shut on small animals is the
A. Venus flytrap. B. horsetail. C. sundew plant. D. pitcher plant. E. club moss.