During chemotaxis, attractants increase the rate of autophosphorylation whereas repellants decrease this rate
Indicate whether the statement is true or false.
Answer: FALSE
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The convergence in external morphology of sharks, penguins, and porpoises is attributed to
a. reduced genetic variability in these groups. b. selection pressures that are common to these groups. c. reproductive isolation of these groups. d. identical genes in all three groups. e. use and disuse of the limbs.
Amphotericin B, nystatin, and the imidazoles are all
A. fungal enzymes. B. antifungal drugs. C. culture media supplements for fungi. D. mycotoxins. E. None of the choices are correct.
Organic molecules have a carbon backbone and _____ such as -OH and -NH2 that affect their chemical properties
A. chemical groups B. R groups C. extension groups D. functional groups
The material responsible for transformation was shown to be DNA by
A. Watson and Crick. B. Avery, MacLeod, and McCarty. C. Lederberg. D. Stanley.