The graph above illustrates the finding that ____
a. habitat preference is innate in blue tits but not in coal tits
b. blue tits instinctively prefer pine trees while coal tits instinctively prefer oak trees
c. habitat preference in both blue tits and coal tits is innate
d. habitat preference in both blue tits and coal tits is learned
e. habitat preference in blue tits is learned but in coal tits it is innate
C
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Class II MHC proteins would be found on the surface of a:
A. cytotoxic T cell. B. mast cell. C. dendritic cell. D. liver cell.
Familial hypercholesterolemia illustrates incomplete dominance in humans because
A) heterozygotes have an intermediate number of low-density lipoprotein receptors on their liver cells. B) homozygous wild type individuals have an intermediate number of low-density lipoprotein receptors on their liver cells. C) heterozygotes have an intermediate number of low-density lipoprotein receptors on their kidney cells. D) heterozygotes have the minimal number of high-density lipoprotein receptors on their liver cells.
Despite living their entire lives in saltwater, most marine invertebrates do not struggle with the hypertonic environment. Which of the following explains this phenomenon?
a. Their body fluid concentrations conform to changes in seawater concentration through physiological adaptations. b. Their cells have seawater inside of them, making them isotonic to their environment. c. They absorb extra water at all times to dilute the salt concentration. d. They are capable of metabolizing the salt in vast quantities and excreting the sodium and chlorine.
Organs strung together functionally and usually structurally form
a. organs. b. systems. c. tissues. d. organelles.