The Ames test
A. is used to measure levels of oxygen free radicals.
B. is used to measure the repair of thymine dimers.
C. can be used to measure the mutagenicity of chemicals.
D. None of the choices are correct.
Answer: C
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In general, repressor proteins that act to inhibit eukaryotic gene expression:
A. interfere with communication between Pol II and DNA-binding transactivators. B. block Pol II-mediated polymerization of ribonucleotides. C. bind to the C-terminal domain of Pol II. D. disrupt HMG protein-DNA interactions.
When you suffer an injury, white blood cells near the injury site initiate the inflammatory response.
a. true b. false
The four-chambered heart first evolved among the:a
arthropods. b. birds. c. nonavian reptiles. d. mammals. e. fishes.
In what molecular form does the human body store excess carbohydrates in muscles and the liver?
What will be an ideal response?