Extracellular glucose inhibits transcription of the lac operon by _____

A) strengthening the binding of the repressor to the operator
B) weakening the binding of the repressor to the operator
C) inhibiting RNA polymerase from opening the strands of DNA to initiate transcription
D) reducing the levels of intracellular cAMP


D

Biology & Microbiology

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The term that best describes all of the chemical reactions of a cell, including acquisition and use of molecules and

energy, is ____.

a. metabolism b. anabolism c. catabolism d. energy budget e. thermodynamics

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Eukaryotes use these highly specialized enhancer elements, which regulate the transcription of multiple genes packaged in complexes of closely related genes (e.g., ?-globin)

What will be an ideal response?

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A carbon atom is most likely to form what kind of bond(s) with other atoms?

A) ionic B) hydrogen C) covalent D) ionic bonds, covalent bonds, and hydrogen bonds

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Which of the following statements about the oomycote algae is FALSE?

A) They form hyphae. B) They produce zoospores in a sporangium. C) They cause plant diseases. D) They have chlorophyll. E) They reproduce sexually.

Biology & Microbiology