The active ingredient in the popular drug Ecstasy is related to
a. heroin.
b. cocaine.
c. codeine.
d. amphetamine.
e. serotonin.
D
Biology & Microbiology
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In a plant, which of the following is triploid (3n)?
A. Pollen grain B. Embryo sac C. Seed D. Endosperm E. None of the answers are triploid
Biology & Microbiology
Mitosis followed by cytoplasmic division produces ____.
Biology & Microbiology
The molecule shown above is the pyrimidine ____, which is typically found in RNA but not DNA
a. thymine b. adenine c. uracil d. guanine e. cytosine
Biology & Microbiology
The mitochondrial outer membrane contains a channel composed of the protein
a. claudin. b. porin. c. channelin. d. connexin.
Biology & Microbiology