Taq polymerase is commonly used in PCR reactions because it ____
a. keeps the primers from annealing to the DNA
b. makes fewer DNA replication errors than other DNA polymerases
c. is a heat-stable DNA polymerase
d. is more efficient at replicating DNA than other DNA polymerases
e. helps the primers anneal to the correct DNA sequence
ANSWER: c
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The peptidoglycan of bacterial cell walls contains a carbohydrate matrix linked together by short chains of:
A. fatty acids. B. steroids. C. nucleotides. D. amino acids. E. water molecules.
Most of the energy that is released by the full breakdown of glucose to CO2 and water ends up in _____
a. NADH b. ATP c. heat d. electrons
A major evolutionary trend among plants is
What will be an ideal response?
The collars on the cells of choanoflagellates have the function of:
A. protecting the flagellum B. attaching to the substrate C. storing waste materials of the cell D. filtering bacterial food from the water E. directing currents away from the flagellum