Generally, what must healthy adults consume in order to contract botulism?

A. spores of C. botulinum
B. vegetative cells of C. botulinum
C. botulin toxin on contaminated food
D. botulin toxoid on contaminated food
E. botulin antitoxin on contaminated food


Answer: C. botulin toxin on contaminated food

Biology & Microbiology

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What would be most likely to occur if one of a man's testicles failed to descend (drop into the scrotum)?

A. The pH of his semen would be higher than normal. B. Gonadotropins within the undescended testicle would be inactivated. C. He would have a lower than normal sperm count. D. He would be unable to undergo spermatogenesis. E. He would have exaggerated secondary sex characteristics.

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________ occurs when the concentration of pollutants gets higher as it passes to higher trophic levels

a. Trophic accumulation b. None of these choices c. Endocrine disruption d. Biological magnification

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For the light-independent reactions to occur, all

of the following with one exception must be present. SELECT THE EXCEPTION.

a. rubisco b. light c. RuBP d. ATP and NADPH e. pyruvate

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If tall (D) is dominant to dwarf (d), and two

homozygous varieties DD and dd are crossed, then what kind of progeny will be produced? a. all intermediate forms b. all tall c. all dwarf d. 1/2 tall, 1/2 dwarf e. 3/4 tall, 1/4 dwarf

Biology & Microbiology