Microscope rulers measure microorganisms in micrometers (?m). How many micrometers fit in a meter?
A. 100
B. 1,000,000
C. 100,000
D. 1,000
E. 10
B. 1,000,000
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The central issue in population genetics is
A. natural selection. B. population size. C. rates of mutation. D. genetic variation. E. phenotypic variation.
In the figure above, representing transcription, the item labeled "C" is
a. the nontemplate strand. b. RNA-DNA hybrid. c. the template strand. d. DNA double helix. e. the RNA copy.
GABA works by
a. inhibiting reuptake. b. enzyme degradation of neurotransmitter. c. stimulating reuptake. d. dilating blood vessels. e. inhibiting release of other neurotransmitters.
Use the figure below to match the pigments' description with their absorption spectra.
Figure 6.5C
A. Closely related to chlorophyll a B. Potent antioxidant and signaling molecule found in carrots C. Accessory pigment in red flowers D. Allows algae in deep sea waters to survive by absorbing green and blue-green light E. Main pigment in photosynthetic plants