One of the reasons that rods are more sensitive to dim light than cones is that
A. they form graded potentials instead of the action potentials formed by cones.
B. they are found in the eye in greater numbers than cones.
C. it takes less light to break apart rhodopsin than the photopigments found in cones.
D. rhodopsin shows a peak response to all wavelengths in the visual spectrum.
Answer: C
You might also like to view...
once the simple tone-on tone-off discrimination learning was completed, response rate during the
a. S- was approximately half of what it is during the S+. b. S- was about the same as that during the S+. c. S+ was essentially zero. d. S- was essentially zero.
Which of the following describes the primary purpose of the modern mental hospital?
a. to provide outpatient care b. to provide a supervised residential facility c. to serve as a halfway house d. to offer day treatment programs e. to provide a protective living environment for long-term patients
Suppose you take a drug that indirectly causes potassium (K+) to leave your postsynaptic neurons. What effect would the drug have?
a. ?excitatory b. ?inhibitory c. ?hallucinogenic d. ?sedative
Byron was reading an article in the New York Times that discussed the effectiveness of a new medication for those suffering from scleroderma. The article interviewed the medicine's inventor,
who gave a plethora of information as to why this medication is safe, effective, and economical. Because Byron is a critical thinker, he is cautious in his acceptance of the article's claims. Why? a. Byron understands that anything printed in a newspaper should be viewed with caution because it is not a scholarly journal. b. Byron knows that medical science cannot possibly produce a medication that can be both effective and safe while also being economical. c. The article does not actually report on the methods used in the research, so the methods must have something wrong with them. d. Byron knows that the medicine's inventor may have an agenda that influences his interpretation of the research into the safety and effectiveness of the new medicine.