Uses of chlorofluorocarbons include all of the following EXCEPT for ____
a. gasoline additives
b. air conditioner coolants
c. refrigeration coolants
d. plastic packaging
e. solvents
ANSWER: a
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A karyotype is a technique by which a researcher can see and count chromosomes
A. true B. false
When fats are broken down as energy sources, their components enter ____
a. glycolysis b. the Krebs cycle c. electron transport d. glycolysis and the Krebs cycle e. glycolysis and electron transport
A faster-than-normal heart rate is called:
a. brachycardia b. atrial fibrillation c. tachycardia d. ventricular fibrillation e. stroke
Hawthorn maggot flies that breed on native hawthorns or introduced European apples can mate in the lab, but rarely mate in the wild. This is an example of _____ reproductive isolation.
A. postzygotic B. prezygotic C. allopatric D. sympatric E. outgroup