Chromosomes other than those involved in sex
determination are known as
a. nucleosomes.
b. hematosomes.
c. alleles.
d. autosomes.
e. liposomes.
Answer: d
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In the figure above, region 7 aids photosynthesis by
a. splitting water. b. absorbing different wavelengths of light than chlorophyll. c. transferring hydrogen ions to chlorophyll. d. absorbing energy from chlorophyll. e. absorbing energy from cytochromes.
Capsicum binds to a calcium channel in the nociceptor’s cell and triggers an influx of calcium into the
cell. What happens if the same receptors are placed in an environment that is unusually warm (such as 48?C) but lacks capsicum?
a. The channels again open, allowing an influx of calcium. b. The channels stay closed. c. The channels open, but much more slowly than they would if capsicum is also present. d. The channels open and are unable to close. e. The channels are unable to open.
When you look at an image, it is inverted on the back of the retina and yet appears right-side-up when perceived in the brain. This change has occurred in
A. the lens. B. the rods and cones themselves. C. the retina which integrates the visual image. D. the visual regions of the brain. E. the ganglionic cells.
The atomic number of this atom (Figure 2.1) is
A. 4. B. 6. C. 10. D. 12. E. cannot be determined from the available information