Course

Biology Science

Study Pack

Set 20 The Molecular Revolution Biotechnology And Beyond

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Question 1

(Multiple Choice)

Free
If mRNAs could be ligated and replicated within plasmids, what enzyme commonly used in recombinant DNA technology would no longer be needed?

A) Taq polymerase
B) restriction enzymes
C) reverse transcriptase
D) DNA polymerase

Answer

Question 2

(Multiple Choice)

Free
In early forensic applications of DNA fingerprinting, DNA was extracted from crime scene material, digested with restriction enzymes, and then analyzed. Today, PCR is used in the early steps of forensic DNA analysis. What advantage does PCR provide over the former method?

A) PCR produces many more bands for fingerprint analysis, making it a more informative technique.
B) PCR can analyze DNA, proteins, and carbohydrates, whereas restriction enzyme analysis is limited to DNA.
C) PCR can cut DNA at many more sites than restriction enzymes can.
D) PCR requires much less DNA for analysis.

Answer

Question 3

(Multiple Choice)

Free
Which of the following is a gene library?

A) a collection of PCR- amplified DNAs
B) a collection of different DNA fragments ligated into plasmids
C) a collection of genes that have been sequenced from a particular organism
D) a collection of DNAs cut by a restriction enzyme
E) a collection of plasmids cut by a restriction enzyme

Answer