A flat expanse of an ocean basin is called:
a. a seamount.
b. an abyssal plain.
c. an abyssal hills.
d. an abyssal prairie.
e. an underwater delta.
B
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One advantage of the fluorescent antibodies that permits disease diagnosis long before primary isolation techniques yield results is that
A) cross-reactions do not occur. B) few controls are required. C) nonspecific staining does not occur. D) it may be applied directly to tissue.
Why would all protozoa be expected to require large amounts of water in their habitats?
A. They require water to avoid dehydration and death. Without being in water, they would quickly dehydrate (due to their small size) and die. B. They require water to help them during photosynthesis by providing an electron source. C. They require water to move around in to seek food particles. Without water, they would be unable to move at all. D. All of the above are correct.
Histones are ____ and _________ proteins
a. large; negatively charged b. large; positively charged c. small; positively charged d. small; negatively charged e. large; uncharged
Atomic number is
a. number of protons b. number of electrons c. number of neutrons