How long ago did the hominid evolutionary line
diverge from that leading to the great apes?
a. about 3 million years ago
b. between 10 million and 5 million years ago
c. during the Eocene epoch
d. less than 2 million years ago
e. about 1.5 million years ago
Answer: b
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If ATP production was regulated by positive feedback, then high levels of ATP in muscle cells would
A. stimulate more ATP production. B. inhibit more ATP production. C. not alter ATP production. D. stimulate ATP degradation. E. All of the answers for this question are correct.
Which of the following is a physical barrier in the nonspecific defense of a mammalian host?
A. Phagocytosis B. Mucous membranes C. Fever D. Inflammation
As a specific locus, a child can inherit only ___ allele from his or her father and ___ allele from his or her mother.
What will be an ideal response?
Which of the following statements concerning bacterial flagella is true?
a. The flagella of bacteria and archaea are homologous. b. The mechanism of movement in bacterial flagella is different from that in protist flagella. c. Although the mechanism of movement in all flagella is the same, bacterial flagella have an independent evolutionary origin. d. All bacteria have flagella. e. Bacterial flagella are much larger than eukaryotic flagella