A student in a CSEC Biology class is studying the steps involved in genetic engineering. Which enzyme is used to cut DNA at specific sites?

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Question

A student in a CSEC Biology class is studying the steps involved in genetic engineering. Which enzyme is used to cut DNA at specific sites?

Accepted Answer

Restriction enzyme — Award 1 mark for identifying restriction enzymes as the 'molecular scissors' that cut DNA at specific recognition sequences. A is incorrect — ligase joins DNA fragments together. B is incorrect — polymerase copies DNA during replication. D is incorrect — amylase is a digestive enzyme that breaks down starch, not DNA.

Answer

Restriction enzyme

Answer

Ligase

Answer

Polymerase

Answer

Amylase

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