Sequencing of the HIV-1 genome revealed that it is most closely related to ____
a. simian immunodeficiency virus
b. feline immunodeficiency virus
c. bovine immunodeficiency virus
d. hepatitis B
e. H1N1
ANSWER: a
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There are _____ microbial cells living on and in our bodies compared to the number of our body cells
a. ten times more b. ten times less c. about the same number of d. about half as many e. 100 times more
The process that forms the electrochemical gradient during photosynthesis is the
A. pumping of H+ into the thylakoid lumen. B. hydrolysis of ATP. C. movement of water by osmosis. D. production of water from oxygen in the thylakoid lumen. E. production of H+ in the stroma during NADPH production.
Satellite-based measures of absorbed photosynthetically active radiation (APAR) can be used to estimate terrestrial ________
Fill in the blank(s) with correct word
In which animals would diffusion alone not be an effective transport mechanism for gas exchange?
a. nematodes b. sponges c. cnidarians d. annelids e. flatworms