When light hits a pigment, how many electrons are excited by a single photon?
a. one
b. two
c. three
d. four
Ans: a. one
You might also like to view...
A modified form of cellulose found in the exoskeletons of insects and crustaceans is known as:
A. chitin B. starch C. amylose D. glycogen
Which of the following regions of the human brain is critically important for monitoring and controlling movements?
A. medulla oblongata B. cerebellum C. hypothalamus D. basal nuclei E. cerebral cortex
While studying the plant Arabidopsis, a botanist finds that an RNA probe produces colored spots in the sepals of the plant. From this information, what can be inferred?
a. The differently colored plants will attract different pollinating insects. b. The RNA probe is transported only to certain tissues. c. The colored regions were caused by mutations that occurred in the sepals. d. The RNA probe is specific to a gene active in sepals. e. More research needs to be done on the sepals of Arabidopsis.
Exchange of genetic material in ciliates is known as
A. conjugation B. panmixis C. macronucleosis D. myxomycetosis E. micronucleosis