Photoreceptors that detect dim light are called ________ cells
a. cone
b. amacrine
c. rod
d. horizontal
c
You might also like to view...
Beta-Diversity measures diversity across communities
Indicate whether the statement is true or false.
Differences in receptive fields in the retina
a. help prevent the brain from being bombarded with confusing signals. b. account for color differentiations. c. account for acuity differences. d. invert the images on the retina. e. allow for perception of light intensity.
cWhich of the following statements concerning Ras proteins is FALSE?
a. They are inactivated when phosphorylated. b. They are G proteins. c. They are active when bound to GTP. d. They are activated by tyrosine kinase receptors. e. They include MAP kinases.
Cocksackieviruses
A. can cause hand-foot-mouth disease. B. are paramyxoviurses. C. are retroviruses. D. are the etiological agents of hairy-cell leukemia. E. replicate in helper T cells.