The first step in a PCR cycle is to heat the sample to 95°C. What is the purpose of heating the sample（）
A. To allow the primer to anneal to the template
B. To separate the two strands of DNA
C. To produce the optimal temperature for Taq dna polymerase to work
D. To produce the optimal temperature for most enzymatic reactions
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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（）
A. Reverse transcriptase
B. RNAse
C. DNA polymerase
D. RNA polymerase
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
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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