Which of the following is true about primers? They are composed of RNA. The lagging replicated strand will require multiple primers. Primers must be removed at the completion of DNA replication. All of the above answers are correct.
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Which of these is FALSE about primers? Primers are synthesized by primase. Primers consist of short RNA sequences. Primers provide 3' end to which DNA polymerase can attach DNA nucleotides. Most primers are replaced with DNA except those on the ends of the chromosome. Only the lagging strand needs primers.
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Why is an RNA primer necessary for DNA replication? A. The RNA primer is necessary for the activity of DNA ligase. B. The RNA primer creates the 5' and 3' ends of the strand. C. DNA polymerase can only add nucleotides to RNA molecules. D. DNA polymerase can only add nucleotides to an existing strand. E. All of the above are true. During transcription of a particular gene, the RNA polymerase will transcribe A. both strands, but only one of the messenger RNAs molecules will be used. B. only one of the DNA strands, in the 5' to 3' direction. C. both strands, but in the 3' to 5' direction for one and in the 5' to 3' direction for the other. D. only the exons of the gene while skipping over the introns One way to prevent a gene from being translated is to prevent the A. inducer from causing the repressor to release from the operator. B. ribosome from binding to the DNA. C. ribosome from binding to the mRNA. D. RNA polymerase from binding to the DNA. How many hydrogen bonds would form between the DNA sequence ACCG and its complement on the other strand in a double helix? A. 6 B. 11 C. 10 D. 8 E. 9 Define the function of only 2 of the following molecules or enzymes involved DNA replication: primase, helicase, single-stranded binding proteins (SBBs), topoisomerase, DNA polymerase I, DNA polymerase III, ligase (If you define more than 2 molecules or enzymes you can earn extra points)
Which of the following statements is TRUE regarding the lagging strand of DNA during replication? Select one: a. Lagging strands require RNA primers, DNA strands do not b. Ligase only works on the lagging strand, not on the leading strand c. lagging strands require the same number of RNA primers than the leading strands for the same ammount of DNA copied d. When replication is completed, one of the newly synthesized strands is the lagging strand and its complement is the leading strand e. The Parental strand of the leading strand is identical to the newly synthesized lagging strand
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