The largest organism ever to have existed in the world is (was) a
A. whale.
B. dinosaur.
C. sequoia tree.
D. fungus.
E. mammoth.
D. fungus.
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Recognizing pathogens that contain multiple unique proteins which enable the human immune system to recognize just one and mount an effective response has opened the door on development of some vaccines only being
A) attenuated carrier viruses. B) monovalent. C) subunit vaccines. D) purified protein administered.
The microscopic air sacs or alveoli are the sites where blood
(a) picks up oxygen. (b) gives up carbon dioxide. (c) gives up oxygen. (d) both a and b.
Host ________ is the process by which some cells are able to degrade an exogenote.
Fill in the blank(s) with the appropriate word(s).
Axons and dendrites of individual neurons, arranged in bundles and covered by connective tissue, make up ________
Fill in the blank(s) with correct word