A pH of 10 is how many times as basic as a pH
of 7?
a. 2
b. 3
c. 10
d. 100
e. 1,000
E
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Which tissue type, or organ, is NOT correctly matched with its germ layer tissue?
A) nervous â€" mesoderm B) muscular â€" mesoderm C) stomach â€" endoderm D) skin â€" ectoderm E) skeletal â€" mesoderm
The two strands of the DNA double helix are held together by
A) 5' to 3' attraction. B) hydrogen bonds between nucleotide bases. C) codons. D) peptide bonds between nucleotide bases.
Characters that are similar because of descent from a common ancestor are _____; characters that are similar due to convergent evolution are _____
A. homologous; analogous B. analogous; homologous
The actions of insulin and glucagon could be described as
a. synergistic. b. antagonistic. c. cooperative. d. permissive. e. mutualistic.