Four of the following can cause birth defects. Which one is the exception?
a. tobacco
b. alcohol
c. poor nutrition
d. rubella
e. folic acid
ANSWER: e
Biology & Microbiology
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a. integral proteins b. glycoproteins c. cholesterol d. phospholipids
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Buchnera aphidicola provides ________ to its aphid host that are essential to the survival of the insect.
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Enteric bacteria commonly occupy the human intestine and primarily produce:
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