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

question 62

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 other enzymes.

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Definitions:

Total Surplus

The combined benefit that both consumers and producers receive from a transaction, comprising consumer and producer surplus.

Consumer Surplus

The difference between the total amount that consumers are willing and able to pay for a good or service (indicated by the demand curve) and the total amount that they actually do pay (i.e., the market price).

Producer Surplus

The difference between what producers are willing to accept for a good or service versus what they actually receive, often reflecting gains from trade.

Tariff Revenue

Income generated by a government from imposing tariffs on imported goods.