In skeletal muscle contraction, ____ directly fuels the movement of the myosin head
a. glucose
b. fatty acids
c. GTP
d. ATP
e. an H+ gradient
ANSWER: d
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The DNA technique used to initially identity promoter sequences was
A) DNA fingerprinting. B) chromosomal walking. C) DNA footprinting. D) chromatin immunoprecipitation assay. E) RNA protection
Biome distribution depends on _____
a. climate c. soils b. elevation d. all of these
The difference between normal and sickle-cell
hemoglobin is based upon
a. the number of amino acids in the molecule. b. the substitution of one amino acid for another. c. the number and orientation of the amino acid chain attached to the heme portion of the molecule. d. the number of oxygen molecules that can be carried. e. the types of bone marrow that produce it.
The photoreceptors that allow for an individual's black-and-white vision are known as ________
Fill in the blank(s) with correct word