pH is a measure of
a. an enzyme's effectiveness.
b. enzyme concentration.
c. hydrogen ion concentration.
d. none of the above.
a
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There is a group of invertebrate animals called rotifers, among which a particular group of species reproduces, as far as is known, only asexually. These rotifers, however, have survived a long evolutionary history without evidence of having been overcome
by excessive mutations. Since the rotifers develop from eggs, but asexually, what can you predict? A) The eggs and the zygotes are all haploid. B) The animals are all hermaphrodites. C) While asexual, both males and females are found in nature. D) All males can produce eggs. E) No fertile males can be found.
The anticodon of the tRNA molecule base pairs with
a. DNA. b. mRNA. c. amino acids. d. polypeptides. e. rRNA.
A Ca2+-binding protein that activates many enzymes, including myosin light-chain kinase, is
A) Ca2+-ATPase. B) gelsolin. C) calmodulin. D) myosin light-chain phosphatase. E) TnC.
In pea plants, green pod color dominates yellow pod color. If a pea plant with yellow pods is crossed with a pea plant heterozygous for pod color, ____ of the offspring will have yellow pods.
A. 25% B. 50% C. 75% D. 100%