题目内容

The first step in replication is separating the two strands of DNA. This task is achieved by the enzyme helicase, which unwinds the double stranded DNA. What does this create（）

A replication fork
B. A transcription bubble
C. A DNA Zipper
D. Primase

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During replication, which enzyme is responsible for making a daughter strand of DNA using the parent strand as template（）

A. Reverse transcriptase
B. RNAse
C. DNA polymerase
D. RNA polymerase

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Which of the following is the best definition of “translation”（）

A. Protein makes DNA
B. RNA makes DNA
C. RNA makes protein
DNA makes RNA

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The two strands in the DNA double helix are anti-parallel. What does this mean（）

A. Both strands run in the 3′ to 5′ direction
Both strands run in the 5′ to 3′ direction
C. Anti-parallel is used to refer to the left-handed curve of the DNA double helix
D. One strand runs in the 5′ to 3′ direction and the other runs 3 to 5 direction

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In the laboratory, DNA molecules can be cut at specific sequences using（）

A. UV light
B. restriction nucleases
C. DNA ligase
D. laser tweezers
E. DNA polymerase

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The first step in replication is separating the two strands of DNA. This task is achieved by the enzyme helicase, which unwinds the double stranded DNA. What does this create（）

A replication fork B. A transcription bubble C. A DNA Zipper D. Primase

During replication, which enzyme is responsible for making a daughter strand of DNA using the parent strand as template（）

Which of the following is the best definition of “translation”（）

The two strands in the DNA double helix are anti-parallel. What does this mean（）

In the laboratory, DNA molecules can be cut at specific sequences using（）

A replication fork
B. A transcription bubble
C. A DNA Zipper
D. Primase