Why Is Taq Polymerase Used More Commonly in PCR Than

question 38

Multiple Choice

Why is Taq polymerase used more commonly in PCR than DNA polymerase I from E.coli?
1) Taq polymerase remains active during the high heat denaturation step unlike DNA polymerase I
2) Taq polymerase is less expensive than DNA polymerase I
3) Taq polymerase must be added after each deanturation step unlike DNA polymerase I

• A) 1
• B) 2
• C) 3
• D) 1 and 2
• E) All of these

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Definitions:

Classical Conditioning

A learning process that occurs when two stimuli are repeatedly paired; a response that is at first elicited by the second stimulus is eventually elicited by the first stimulus alone.

Habituation

The process by which an individual becomes accustomed to a stimulus through repeated exposure, leading to a decrease in response.

Operant Conditioning

A method of learning that employs rewards and punishments for behavior, encouraging the formation of new behaviors.

Bayley III Scales

A comprehensive developmental tool that assesses the cognitive, language, motor, social-emotional, and adaptive behavior skills of infants and young children.