Question

taq polymerase is an enzyme used in the polymerase chain reaction (pcr) to replicate fragments of dna. a study published in 1976 examined the properties of taq polymerase after the enzyme was isolated from thermus aquaticus, a thermophilic bacterium that lives in the hot springs of yellowstone national park. the graph shows one of the results of the study. which statement about enzyme activity is best supported by this graph? a) an enzyme works equally well in bacteria that are adapted to high temperatures and in eukaryotic cells such as human cells b) an enzymes rate of activity increases with until it becomes active c) an enzyme must be composed of multiple polypeptides, or subunits, to be active d) an enzyme functions best under specific temperature conditions

Explanation:

The graph shows that Taq polymerase enzyme activity has a peak at a certain temperature, indicating it functions best under specific temperature conditions. It does not show comparisons between bacteria and eukaryotic cells, or about enzyme activation onset, or enzyme composition.

Answer:

d) an enzyme functions best under specific temperature conditions