Biology

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25 July, 10:31

Taq polymerase is an enzyme used in the polymerase chain reaction (PCR) to replicate fragments of DNA. A study publishedin 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 graphs shows one of the results of the study. Which statement about enzyme activity is best supported by this graph? A) An enzyme must be composed of multiple polypeptides, or subunits, to be active. Reactivate B) An enzyme's rate of activity increases with time until it becomes inactive. C) An enzyme functions best under specific temperature conditions. D) An enzyme works equally well in bacteria that are adapted to high temperatures and in eukaryotic cells such as human cells.