Research comparing chromosomal structure between the genomes of humans and other primates reveals that humans
are most closely related to ____.
a. monkeys
b. orangutans
c. chimpanzees
d. gorillas
e. lemurs
ANSWER: c
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Which type of plant can utilize the Calvin cycle?
A. C3 plants B. CAM plants C. C4 plants D. C3, C4, and CAM plants
Receptors for the general senses are
A. limited to the head. B. limited to the legs. C. found only in the brain and spinal cord. D. found throughout the body. E. found only on the surface of the body.
Activation of the parasympathetic nervous system
a. causes the pupils of the eye to constrict. b. decreases heart rate. c. decreases glandular secretions. d. contracts sphincters. e. increases the flow of thick saliva.
Which of the following characteristics of the structure of DNA was determined directly from X-ray diffraction photographs of crystallized DNA?
A. the double helical structure B. the length of a given DNA molecule C. the frequency of A versus T nucleotides D. the sequence of nucleotides