____ discovered the basis for the ____ rule, which states that the amounts of adenine and thymine are identical, as are
the amounts of cytosine and guanine.
a. Avery; base-pair
b. Griffith, double helix
c. Chargaff; base-pair
d. Chase; double helix
e. Pauling; base-pair
ANSWER: c
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The tertiary structure of a protein is ____
a. the amino acid sequence in a polypeptide chain b. generated by the formation of bonds between amino acids c. formed by a protein region folding on itself d. formed by the interaction of two or more polypeptide chain e. generated by bonding and folding of ribosomes attached to the endoplasmic reticulum
The first land plants were restricted to moist, marshy environments because of
A) reproductive cell requirements. B) the need for stem support. C) the need for nutrients. D) sensitivity to sunlight. E) the lack of a cuticle.
Substrate-level phosphorylation transfers phosphate groups directly from ____ to ADP.
A. a substrate B. coenzymes C. the electron transfer chain D. ATP E. the citric acid cycle
When blood sugar levels are running low, the body would produce more:
A) insulin than glucagon. B) insulin than cortisol. C) insulin than adrenaline. D) glycogen than insulin. E) glucagon than insulin.