Atoms share electrons to obtain _______ electrons in their valence shell.
A. 8 or 10
B. 2 or 4
C. 2 or 8
D. 4 or 8
Ans: C. 2 or 8
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In general, most cell inclusions function as energy reserves or as a reservoir of structural building blocks
Indicate whether the statement is true or false.
The technique of Sanger sequencing takes advantage of the fact that dideoxynucleotides (nucleotides in which the 3' hydroxyl group is absent) act as
A. palindromic sites. B. restriction sites. C. chain terminators. D. probes. E. none of these
After a large meal is digested, how does the liver reduce blood glucose levels?
A) by converting glucose to glycogen B) by breaking down glucose into waste products C) by stimulating the pancreas to store excess glucose D) by releasing hormones that inhibit the pancreas
In the phalarope, or wadepiper bird, the male is unusual in playing the larger parenting role -- he performs all the egg incubation and chick care. What unusual behavior might you predict for the female of the species?
A. The female is part of a large harem of females, under the domain of a single male. B. The female provides sperm to fertilize the male's eggs. C. The females have dull, brown coloring that keeps them well-camouflaged. D. The females compete to mate with the males, who choose among them.