A(n) ________ operon is one whose transcription is repressed by effector molecules.

A. activated
B. repressible
C. inducible
D. coinducible
E. compressible


B. repressible

Biology & Microbiology

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Growth of pathogens in a food generally does not result in perceptible changes in the quality of the food but the ingestion of this food can result in

A. spoilage. B. foodborne illness. C. aging. D. toxin infection.

Biology & Microbiology

Some archaea are commonly found in

A. meteors. B. boiling hot springs. C. the Great Salt Lake. D. your refrigerator. E. boiling hot springs AND the Great Salt Lake.

Biology & Microbiology

Which are structures formed from the neural crest? (Check all that apply.)  

_____  a gill chamber of primitive chordates _____  blastopores _____  sensory neurons of the dorsal root ganglia _____  Schwann cells _____  olfactory and hearing organs

Biology & Microbiology

Inflammation, complement proteins, and phagocytes are a part of ____ immunity

a. adaptive b. innate c. antibody-mediated d. cell-mediated e. surface barrier

Biology & Microbiology