RNA primers function to A. allow for the start of replication of DNA. B. signal a site for ribosomal attachment. C. provide a non-sense codon. D. All of the above are correct
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RNA primers are short sequences of RNA that provide a starting point for DNA synthesis. They are essential for DNA polymerase to initiate the replication process. Show more…
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7. (5 points) Circle the two statements that are false A. Neither DNA polymerase nor RNA polymerase can function without a primer with a free 3’ end B. Both the lagging and leading strands require primers in DNA replication C. DNA polymerase can only add nucleotides to an existing DNA strand D. Primase is required to initiate transcription E. Ligase is needed connect the codons together in an mRNA 8. (5 points) In ________-karyotes, the small ribosome subunit carrying a methionine tRNA binds to the ___________________, then scans the mRNA until it finds the start codon. In ________-karyotes, the ___________________ sequence in the mRNA interacts with the small subunit
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DNA replication requires _____. a. template DNA b. nucleotides c. primers d. all of the above
What seemed obvious about DNA replication when the double helix structure was proposed in 1953? a. It was obvious that RNA would do all the work. b. It was obvious that RNA primers would be needed for DNA replication. c. It was obvious that each strand could serve as a template for DNA synthesis, since the two strands were held together by weak hydrogen bonds. d. It was obvious that telomeres would get shorter each time DNA replication took place. e. It was obvious that there should be twice as much dAdenine as dThymine. Which of the following is NOT an enzyme involved in DNA replication? a. Helicase b. Primase c. DNA polymerase III d. DNA polymerase I e. RNA polymerase II What is the function of the DNA replication enzyme primase? a. It unwinds the double helix, making two single strands. b. It makes long stretches of complementary DNA. c. It repairs incorrectly replicated DNA. d. It synthesizes the RNA primer that initiates DNA synthesis. e. It connects Okazaki fragments.
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