Staphylococcus aureus is a common foodborne disease, because it
A) grows on common foods.
B) is present in some humans that work in food processing.
C) produces several heat-stable enterotoxins.
D) grows on many foods, is present in some humans that work in food processing, and produces several heat-stable enterotoxins.
Answer: D
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The slender stalk that connects the flattened leaf blade to the stem in most dicots is the
A. meristem. B. petiole. C. stele. D. receptacle. E. vein.
Recombination between linked genes comes about for what reason?
A) Nonrecombinant chromosomes break and then rejoin with one another. B) Independent assortment sometimes fails. C) Linked genes travel together at anaphase. D) Crossovers between these genes result in chromosomal exchange.
Chromatids separate and move toward opposite poles during
A. mitosis only. B. meiosis I and meiosis II. C. mitosis and meiosis II. D. mitosis, and meiosis I and meiosis II.
When the glottis becomes narrower,
A. the volume of sound decreases. B. the volume of sound increases. C. the pitch of sound goes up. D. the pitch of sound goes down. E. all sound ceases completely.