The cell membrane of a muscle cell will generate an electrical impulse in response to ________.
Fill in the blank(s) with the appropriate word(s).
Ans: the binding of acetylcholine to membrane receptors
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If you were to view Staphylococcus, you would expect to see clusters of round cells.
a. true b. false
Stomata _____
A) occur in all land plants and define them as a monophyletic group B) open to allow gas exchange and close to decrease water loss C) occur in all land plants and are the same as pores D) open to increase both water absorption and gas exchange
Cancer affects
A) humans only. B) unicellular organisms only. C) multicellular organisms only. D) multicellular and unicellular organisms.
Why is vaccination for rubella recommended?
A) It has a high mortality rate in school-age children. B) Death from secondary infections is common. C) There is a high incidence of congenital infections and birth defects. D) Health care workers have a high incidence of infection. E) It is no longer recommended; rubella has been eradicated.