The temperature at which half of the strands of a double-stranded DNA molecule have separated from each other is called the ________ temperature.
A. melting
B. mobilization
C. separation
D. destabilizing
Answer: A
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Which category of animals had the most threatened and endangered species in 2012?
a. birds b. fishes c. insects d. reptiles
Successful cotransformation in the yeast two-hybrid system will result in the binding of proteins produced by each yeast expression vector. These fusion proteins function by
A) binding to the lacZ operator, preventing transcription. B) binding to RNA polymerase, preventing transcription. C) binding to the lacZ repressor, enabling transcription. D) binding to the lacZ upstream activator sequence, enabling transcription. E) changing color in the presence of X-gal.
Which antibiotic is overcome by beta-lactamases?
a. Tetracycline b. Sulfonamide c. Penicillin d. Tetracycline, Penicillin, and Sulfonamide are all affected by beta-lactamase.
Hydrogen bonds are very important in the functional shape of:
A) proteins and nucleic acids. B) nucleic acids. C) sugars. D) proteins. E) fats.