An activated G-protein binds to a cell membrane receptor. This activates an effector protein, adenylyl cyclase, which generates second messengers. In this case, the G-protein is a _____
A) transport protein
B) sensory protein
C) motor protein
D) signaling protein
D
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Which of the following is likely to be the least credible source of information?
A. Information found on the website of the FDA B. Information found on the website of American Heart Association C. Information found on a website selling dietary supplements D. An article published in a magazine that is written by a registered dietitian
The first half of pregnancy is considered the maternal _____ phase while the second half of pregnancy is considered the maternal _____ phase
a. anatomic; catatonic b. catatonic; anatomic c. catabolic; anabolic d. anabolic; catabolic e. hyperplastic; hypertrophic
Beta-carotene prevents _____ from damaging cells
a. free radicals b. antioxidants c. blood clots d. vitamin E
Sue is concerned about her children's teeth after their first dental checkups. Her 2 year old already has a cavity and her 4 year old needs to brush better. What else should Sue's children do to prevent tooth decay?
a. Only drink 100% fruit juices. b. Eat candy only between meals and not with them. c. Eat crackers and pretzels as snacks and not candy bars. d. Rinse their mouths with water after eating. e. b and d