The oxidative energy system fuels the body over long periods of exercise, and can use molecules other than glucose for energy. What are those other molecules?
a. ATP and GTP
b. creatine phosphate and dihydrogen oxide
c. dihydrogen oxide and nitric oxide
d. fats and proteins
e. glucose and fructose
D
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How can scientists determine what atmospheric CO2 levels were like hundreds—or even thousands—of years ago? Select all that apply
A. They can examine ice core samples from Antarctica. B. They can examine CO2 levels in the outermost layer of Earth' atmosphere. C. They can examine the number of stomata in fossilized leaves. D. They can examine the number of fossilized dinosaur skeletons from different eras.
A man and woman are each heterozygous for the autosomal recessive gene for albinism. They already have two nonalbino
children and want to have two more. What is the probability that their next two children will be phenotypically identical to each other with regard to skin color (i.e., either both albinoor neither albino)?
a. 1/16 b. 3/16
c. 4/16 d. 9/16 e. 10/16
Translocation is the process whereby the __________ moves in order to place the tRNA bound to the
growing polypeptide chain in the __________ site, thereby freeing the __________ site for a new aminoacyl-tRNA. a. mRNA; A; P b. ribosome; P; A c. tRNA; P; A d. ribosome; A; P e. tRNA; A; P
The oxidation of ammonia (NH4+) to nitrate (NO3-) is called
A. ammonification. B. nitrification. C. nitrogen fixation. D. photosynthesis. E. denitrification.