Why is it probably not a good idea to drink water directly from a mountain stream (i.e., untreated) even if it appears to
be unaffected by human activities?
What will be an ideal response?
ANSWER: It is possible the water contains Giardia. Giardia is a metamonada that induces severe
diarrhea and abdominal cramps and is spread by water contaminated with feces. Therefore,
if animals have been using the stream, there is a chance of it containing Giardia.
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The release of the protein insulin from pancreatic cells occurs by rev:
A. endocytosis. B. pinocytosis. C. phagocytosis. D. exocytosis. E. receptor-mediated endocytosis.
Which of the following is a characteristic of smooth endoplasmic reticulum (SER) but not rough endoplasmic reticulum (RER)?
A) Protein synthesis B) Sending vesicles to the Golgi that contain proteins that are either secreted or become part of the plasma membrane C) Steroid synthesis D) Drug and alcohol detoxification E) Steroid synthesis and drug and alcohol detoxification
Scientific names of organisms consist of two English terms.
a. true b. false
Which components must be removed during a dehydration synthesis reaction?
A. -H and -OH B. -N= and -OH C. -OH and —COOH D. —COOH and -H