The cell membranes of photoreceptors contain sodium and calcium channels that are normally ___
a. open
b. closed
c. depolarized
d. refractory
A
You might also like to view...
Dr. Jacoby has just discovered a new drug that blocks the action of acetylcholine. It is likely that this new drug will produce side effects such as
a. general stimulation within the body and an increase in heart rate. b. paralysis and memory loss. c. anxiety reduction and general relaxation. d. hallucinations and disrupted sleep patterns.
Child maltreatment, family conflict, and media-based pressures to be thin are all
a. biological vulnerabilities. b. psychocultural vulnerabilities. c. environmental stressors. d. psychological vulnerabilities.
Who won the Nobel Prize for the discovery of the functions of telomeres and telomerase?
A) Meyer Friedman and Ray Rosenman B) Linus Pauling C) Hans Selye D) Elizabeth Blackburn
Which of the following is not one of the indexes of the Wechsler Scale of Intelligence?
a. Verbal Comprehension c. Perceptual Reasoning b. Mathematical Reasoning d. Processing Speed