pH7 solution is
a. acidic
b. neutral
c. basic
Ans: b. neutral
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Endotherms have higher metabolic rates than do ectotherms and are therefore able to be active over a narrower range of environmental temperatures
A. true B. false
If the nitrogenous bases of both a DNA transposon and a retroelement were tagged with fluorescent markers, what statement best describes the result after transposition of both types of TEs has occurred?
A. The markers would be found at the new site of the DNA transposon, but not at the new site of the retroelement. B. The markers would be found at the new site of the retroelement, but not at the new site of the DNA transposon. C. The markers would be found at the new sites of the DNA transposon and the retroelement. D. The markers would be not be found at either new site.
Why is it unlikely that we will find fossils of
every extinct species?
a. Most dead organisms are eaten by scavengers. b. Organic remains decompose. c. Not all species have hard parts like bones or teeth. d. Most fossils are buried too deep for us to find. e. More than one of these is correct
In ____ bonds, both atoms exert the same pull
on shared electrons. a. nonpolar covalent b. polar covalent c. double covalent d. triple covalent e. coordinate covalent