The Polymerase Chain Reaction (PCR)technique Could Be Developed Only After

question 60

Multiple Choice

The polymerase chain reaction (PCR) technique could be developed only after the discovery of bacterial enzymes that were able to withstand high temperatures.Why was it necessary to use such enzymes?

• A)Only bacterial DNA can be copied using the PCR method,so bacterial enzymes were necessary.
• B)Bacterial enzymes can bind to DNA outside of a cell.
• C)DNA can be cut into fragments only at high temperatures.
• D)The temperature required to separate DNA strands during PCR degrades most normal enzymes.

---

Definitions:

Goal Difficulty

The extent to which a goal is challenging and requires effort to achieve; generally, more difficult goals can lead to higher performance if they are seen as attainable.

Performance Feedback

Information given to individuals or groups about their performance to facilitate improvement and learning.

Goal Acceptance

The degree to which individuals or teams embrace and commit to pursuing set objectives.

Goal Specificity

The degree to which objectives are clearly defined, unambiguous, and measurable, making it easier to focus efforts and evaluate progress.