The letter "C" in the accompanying figure represents which teeth?
a. incisors
b. molars
c. canines
d. premolars
e. grinders
ANSWER: c
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The active site of an enzyme
a. is where the coenzyme is located. b. is a specific bulge or protuberance on an enzyme. c. is a groove or crevice in the structure of the enzyme complementary to the substrate. d. will react with only one substrate no matter how many molecules may resemble the shape of the substrate. e. rigidly resists any alteration of its shape.
Australopithecus was the first hominin to feature which distinguishing characteristic?
a. bipedalism
b. larger brains c. shorter arms d. sexual dimorphism e. facultative bipedalism
In the Hershey-Chase experiment,
a. DNA from parent bacteriophages appeared in progeny bacteriophages. b. most of the phage DNA never entered the bacteria. c. more than three-fourths of the phage protein appeared in progeny phages. d. DNA was labeled with radioactive sulfur. e. DNA formed the coat of the bacteriophages.
Figure 23.12
?
The accompanying figure illustrates the life cycle of a(n) ____.
A. zygomycete B. ascomycete C. basidiomycete D. glomeromycete E. lichen