The mosaic effect of X inactivation in human
females can be observed in
a. skin color.
b. hair color.
c. fingernails.
d. distribution of sweat glands.
e. all of these
E
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Which of the following sequences best represents the path blood takes through vessels as it leaves and returns to the heart?
a. heart capillaries arterioles veins venules arteries heart b. heart veins venules capillaries arterioles arteries heart c. heart arteries capillaries arterioles venules veins heart d. heart arteries arterioles capillaries venules veins heart
The figure below illustrates a(n)
a. FAD coenzyme. b. cytosine nucleotide. c. thymine nucleotide. d. ATP molecule. e. adenine nucleotide.
Sound waves begin in the oval window create pressure waves first in the ____
a. middle ear b. semicircular canals c. cochlear duct d. scala tympani e. scala vestibuli
Many of the enzymes found in virus particles are ________.
A. involved in the replication of viral nucleic acid B. required for viral attachment to host cells C. involved in viral entry into host cells D. All of the choices are correct.