Which element makes up more than half of the human body?
a. calcium
b. hydrogen
c. oxygen
d. carbon
e. nitrogen
D
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Which of the following is not true of the transcription-activation domains of transcriptional activators?
A. Many are composed of acidic, proline-rich, or glutamine-rich regions. B. They are thought to be relatively unstructured. C. These domains are likely to interact with DNA. D. These domains interact with other proteins.
A group of specialized cells of similar structure and function is a(n)
a. organ system. b. cell cluster. c. organ. d. tissue. e. organism.
In glycolysis, for each molecule of glucose oxidized to pyruvate _____
A) two molecules of ATP are used and two molecules of ATP are produced. B) two molecules of ATP are used and four molecules of ATP are produced. C) four molecules of ATP are used and two molecules of ATP are produced. D) two molecules of ATP are used and six molecules of ATP are produced.
Hereditary information (with the exception of some viruses) is preserved in:
A) deoxyribonucleic acid. B) membrane structures. C) nuclei. D) polysaccharides. E) ribonucleic acid.