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Submitted by sireh_imane on May 8, 2008
Test your knowledge
Match the correct functions
For each of the enzymes in questions, 1-5, choose an answer (a-e) that most closely describes the functions of the enzymes
Question 1 helicase
Question 2 DNA polymerase 1
Question 3 ligase
Question 4 DNA polymerase 111
Question 5 RNA polymerase
Answers (a) removes the RNA primers during replication
(b) performs transcription
(c) unwinds DNA for DNA replication
(d) adds nucleotides during DNA replication
(e) forms phosphodiester bonds between Okazaki fragments
Question 6 Which of the following are the nucleotides found in RNA
(a) A, C, G, T
(b) A, C, G, U
(c) T, C, G, U
(d) A, T, G, U
(e) U, C, T, A
Question 7 Okazaki fragments consist of
(a) a small RNA primer and a stretch of DNA which are complimentary to the 3' to 5' strand of the following diagram.
(b) a small RNA primer and a stretch of DNA which are complimentary to the 5' to 3' strand of the following diagram.
(c) no primer just a stretch of DNA which is complimentary to the 3' to 5' strand of the following diagram.
(d) no primer just a stretch of DNA which is complimentary to the 5' to 3' strand of the following diagram.
3'_________________ 5'
5'---------------------------- 3'
Question 8 You are given a solution containing only the enzyme DNA Polymerase III, the nucleotide precursors dATP, dTTP, dCTP, and dGTP and any necessary ions. You perform 4 separate experiments in which you add a DNA molecule to the solution and test for DNA synthesizing activity.
Which of the DNA molecules listed below would lead to DNA synthesis when added to your solution?
(a). A...
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