Refer to Figure 51-3. The amnion is identified by number:a
1.
b. 2.
c. 3.
d. 4.
e. 5.
A
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The word “evolution” as used in biology literally
means a. natural selection. b. genetic drift. c. divergence. d. change. e. mutation.
A frontal plane is indicated by
a. A. b. B. c. C. d. D. e. E.
The genes involved in tumorigenesis constitute a specific subset of the genome whose products are involved in which of the following activities?
a) apoptosis b) adhesion of a cell to its neighbors c) all of the choices are correct d) repair of DNA damage e) progression of a cell through the cell cycle
How does climate change affect earth's oceans?
A. The pH level of the ocean will shift to a more basic environment, leading to a decrease in overall productivity. B. As levels of carbon in the atmosphere increase, the amount of carbon in the ocean decreases proportionately. C. The pH level of the ocean will shift to a more acidic environment, leading to stress and the possible extinction of many species of shellfish and corals. D. Excess carbon in the atmosphere is absorbed by the ocean, which directly increases ocean temperature.