"Accomodation" is the process in the eye of
A. bending light rays to varying degrees by the lens.
B. converting light energy into electrical signals by the retina.
C. adjustment to varying light levels by altering the sensitivity of the eye.
D. adjustment of the amount of light admitted to the eye by adjusting pupil diameter.
E. regulation of vitreous humor volume.
A. bending light rays to varying degrees by the lens.
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What is the most likely explanation of how 14 genes for globins, each specialized in their function (i.e., hemoglobin, myoglobin), arose in the genome of animals?
A. misaligned crossover B. gene deletion C. gene mutation D. misaligned crossover and gene mutation E. misaligned crossover and gene deletion
The link between population-limiting factors and r-selected species is represented by opportunistic species being limited by
A. density-independent factors and having no offspring. B. density-dependent factors and having many offspring. C. density-dependent factors and having few offspring. D. density-independent factors and having many offspring. E. density-independent factors and having few offspring.
Temperate viruses:a
always destroy their host immediately. b. are considered virulent. c. do not always destroy their host. d. do not undergo a lysogenic cycle. e. undergo a lytic cycle.
The function of the malleus, incus, and stapes in the middle ear is to:
a. amplify the vibrations of sound waves. b. cause the organ of Corti to rub against the tectorial membrane. c. detect movement of the endolymph in the cochlear duct. d. relieve pressure differences between the middle ear and atmosphere. e. give support to the membranous labyrinth.