Each DNA nucleotide is composed of ____
a. a six-carbon sugar, a phosphate group, and one of twenty amino acids
b. a five-carbon sugar, a nitrogenous base, and one of twenty amino acids
c. a five-carbon sugar, a phosphate group, and one of four nitrogenous bases
d. a six-carbon sugar, a nitrogenous base, and one of four amino acids
e. a five-carbon sugar, a phosphate group, and one of four amino acids
ANSWER: c
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True or False: the catalytic subunit of an ATP synthase is referred to as the F1 subunit
A. true B. false
The fever paroxysms of malaria correlate with
A. the entry of sporozoites into the blood following the bite of an infected mosquito. B. the synchronized rupture of infected blood cells and release of merozoites. C. the release of merozoites from infected liver cells during the exoerythrocytic cycle. D. the production of gametocytes within infected erythrocytes.
In Waller's experiment, he placed each of his feet into a pan containing ____
a. carbon dioxide b. iron c. mercury d. pure water e. salt solution
When Bayliss and Starling conducted experiments to
determine what caused secretion of pancreatic juice, they a. cut the blood supply to the upper digestive tract. b. added acidic food to the small intestine and got secretions of pancreatic juices. c. cut the nerve supply to the upper digestive tract. d. got a response from the pancreas using extracts of cells lining the intestinal tract. e. did all of these except “cut the blood supply to the upper digestive tract.”