Which of the following enzymes is responsible for "exposing" or "unwinding" the DNA template (taking it out of its double helix) for DNA Replication? a. Topoisomerase b. Telomerase c. DNA Ligase d. Primase e. Helicase
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Which of the following enzymes is responsible for "exposing" or "unwinding" the DNA template (taking it out of its double helix) for
DNA Replication ?a. Topoisomerase
b. Telomerase
c. DNA Ligase
d. Primase
e. Helicase
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- In DNA replication, the role of topoisomerase is to Question 11 options: a) "unzip" the double stranded DNA in front of DNA polymerase. b) maintain the single stranded DNA. c) supercoil the DNA after the replication fork has passed. d) relieve supercoil tension in the DNA in front of the replication fork.What is DNA polymerase? a.An enzyme that carries out DNA replication b.Short, single strand of DNA that base-pairs with a specific DNA sequence c.An enzyme that corrects mutations that arise during the replication of DNA d.An enzyme that seals any gaps that remain between bases of replicating strands of DNADuring DNA replication, the helicase enzyme binds to DNA and Select one: a. prevents the DNA strands from rewinding back into the helical shape b. cuts the double stranded DNA into single strands c. provides the starting point where new nucleotides can be added d. adds new nucleotides to the template strand
- In DNA replication, a primer is _____. a. what the original DNA strands are called b. a molecule that provides the energy for nucleotide attachments c. a regulatory protein that turns on the gene that starts DNA replication d. an enzyme that breaks the hydrogen bonds between base pairs e. a short piece of nucleic acid that serves as an attachment point for DNA polymeraseWhich enzyme is responsible for proofreading nucleotides during DNA replication? a nuclease b exonuclease c ligase d polymeraseWhich of the following enzymes is NOT involved in DNA replication? a. DNA Polymerase b. Primase c. Helicase d. Phosphatase e. DNA Ligase
- What is DNA polymerase? A. An enzyme that corrects mutations that arise during the replication of DNA B. An enzyme that seals any gaps that remain between bases of replicating strands of DNA C. Short, single strand of DNA that base-pairs with a specific DNA sequence D. An enzyme that carries out DNA replicationDNA polymerase III is a processive enzyme, which means that a. it does not dissociate from the growing strand after it has attached a nucleotide to the 3′ end. b. it makes a new strand very quickly. c. it proceeds toward the opening of the replication fork. d. it copies DNA with relatively few errors.DNA replication is said to be semiconservative because a. one of the new molecules conserves both of the original DNA strands. b. the new DNA molecule contains two new DNA strands. c. both of the new molecules contain one new strand and one old strand. d. DNA polymerase conserves both of the old strands.
- Which of the following is NOT true of DNA replication? a. Helicase uses ATP as an energy source. b. Primase uses ATP to build primers. c. Single-stranded binding proteins are enzymes that hold the strands open. d. Telomerase adds nucleotides to the original DNA template. e. Ligase uses a condensation reaction to make a single phosphodiester bond at each site of ligation..List the stage of DNA replication when each of the following enzymes is active. a. helicase b. primase c. DNA polymerases d. ligase e. topoisomerase f. DNA gyraseWhat is the function of Ligase during DNA Replication a Releases tension on the DNA as it unwinds b Puts down RNA primers so replication can continue c Binds Okazaki Fragments into a continuous DNA strand d Binds to single stranded DNA to protect it from degradation