What is the function of cerebrospinal fluid?
What will be an ideal response?
To cushion the brain and spinal cord
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The epsilon (?) subunit of DNA polymerase III of E. coli has exonuclease activity. How does it function in the proofreading process? The epsilon subunit _____
A) removes a mismatched nucleotide B) excises a segment of DNA around the mismatched base C) can recognize which strand is the template or parent strand and which is the new strand of DNA. D) adds nucleotide triphosphates to the end of the growing DNA strand
Acute bacterial endocarditis differs from subacute bacterial endocarditis in the
A. suddenness and severity of onset. B. population affected. C. resultant damage. D. development of exotoxin shock.
Which group of organisms will break down the wastes and remains within the community and convert them into inorganic building blocks?
a. Decomposers b. Secondary producers c. Primary consumers d. Detritivores e. Primary producers
In captivity, tigers and lions have been known to interbreed and produce hybrids, known as ligers. Why does this NOT make them the same species, according to the biological species concept?
a) the production of ligers is a pre-zygotic species barrier b) producing hybrids in captivity is not a form of interbreeding c) tigers and lions are at the opposite end of a species ring d) captivity is not a natural condition e) tigers and lions are, in fact, considered the same species under the biological species concept