Which organism can cause food poisoning that results in nausea, diarrhea, and vomiting, which occurs 1-6 hours after eating the contaminated food?
A. Staphylococcus
B. Botulism
C. Salmonellosis
D. None of these are correct.
Answer: A
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Which letter is associated with the line that is a thin protein structure that serves as an attachment site for thin filament ends?
A. I B. A C. Z D. M E. H
Increased pressure in the ventricles would close what valve(s)?
What will be an ideal response?
The length tension-relationship in smooth muscle:
A. is similar to that in skeletal muscle, except smooth muscle can adapt to stretch B. is similar to that in skeletal muscle, with an invariant optimal length range C. shows a continual increase in force of contraction as the muscle is stretched D. shows very little force development when only 50% of the myosin is phosphorylated E. requires InsP3-induced Ca++ release from the SR
Which of the following is NOT a role of semen?
A) Semen dilutes sperm. B) The acidity of semen helps neutralize the pH environment of a female's vagina. C) Semen contains enzymes that enhance sperm motility. D) Semen contains antibiotic chemicals that destroy bacteria.