What may be a result of the denaturation of proteins?
a. formation of hydrogen bonds
b. loss of three-dimensional structure
c. removal of R groups from amino acids
d. no change in enzyme activity
e. formation of covalent bonds
ANSWER: b
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The wild type eye color for humans is
A) brown. B) green. C) hazel. D) pink.
Which scenario illustrates a selfish herd?
a. In most wolf packs, one dominant male breeds with one dominant female. b. Lions are social animals who cooperate in catching prey. c. When threatened by wolves, musk oxen stand back to back, presenting an imposing display of sharp horns. d. Chimpanzees learn by imitation in a group. e. A pair of breeding herring gulls will cannibalize the eggs and even the chicks of their neighbors.
Each DNA strand serves as which of the following during DNA synthesis?
a. replicate b. substitute c. template d. source of nucleotides e. source of sugars
Which lineage includes living members that are jawless vertebrates called hagfishes?
a. Myxinoidea b. Urochordata c. Cephalochordata d. Petromyzontoidea