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Description: DNA gyrasea. promotes negative supercoiling.b. relaxes positive supercoils.c. cuts DNA strands as part of its function.d. does all of the above

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Biology

DNA gyrasea. promotes negative supercoiling.b. relaxes positive supercoils.c. cuts DNA strands as part of its function.d. does all of the above

Biology Today and Tomorrow without Physiology (MindTap Course List)

5th Edition

ISBN:9781305117396

Author:Cecie Starr, Christine Evers, Lisa Starr

Publisher:Cecie Starr, Christine Evers, Lisa Starr

Chapter6: Dna Structure And Function

Section: Chapter Questions

Problem 11SQ: Energy that drives the attachment of a nucleotide to the end of a growing strand of DNA comes from...

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Similar questions

Energy that drives the attachment of a nucleotide to the end of a growing strand of DNA comes from ______. a. phosphate-group transfers from ATP b. DNA polymerase c. the nucleotide itself d. a and c
Nucleotide excision repair A. recognizes and repairs thymine dimers and other damaged bases in DNA B. corrects errors in nucleotide excision C. recognizes and removes mismatched bases after DNA synthesis is completed D. removes nucleotides that are incorrectly incorporated during DNA synthesis
A student mixes various molecule needed for DNA replication. When he adds DNA, replication occurs, but each DNA duplex consists of a normal DNA strand paired with numerous segments of DNA a few hundred nucleotides long. What has been left out of the mixture? A. NTPs B. DNA polymerase III C. ATP D. DNA polymerase I E. DNA ligase
Which of the following is not a necessary component for DNA synthesis? a. DNA polymerase I b. dNTPs c. Copper ions d. Parental strand of DNA e. All of the above are required for DNA synthesis
Avery, MacLeod, and McCarty demonstrated that the transforming principle can be destroyed by DNase. Thus, DNA is the genetic material A. Both statements are correct B. Both statements are incorrect C. First statement is Correct, Second is Incorrect D. First statement is Incorrect, Second is Correct
Which of the following is NOT true of DNA polymerase? a. DNA polymerase builds the new strand from 5' to 3'. b. DNA polymerase can start new DNA strands independently. c. DNA polymerase uses a "guess and check" method to add nucleotides. d. DNA polymerase uses dATP as a nucleotide. e. DNA polymerase reads the template from 3' to 5'.
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 polymerase
DNA polymerases ____. a. add new nucleotides to a strand b. repair DNA c. assemble new strands in both direction d. seal gaps in the sugar-phosphate backbone e. catalyze carbon bonding
Replication of DNA produces two daughter DNA molecules in which a. one daughter molecule contains both parent strands and one daughter molecule contains both newly synthesized b. each daughter molecule contains one percent strand and one newly synthesized strand c. each daughter molecule contains two newly synthesized strands d. each daughter molecule contains both parent strands
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.
What are major functions that DNA polymerase performs? A. unzips the DNA strand and makes the new nucleotides B. proof reads the new DNA strands for errors and corrects them C. bonds the nucleotides together forming the new DNA strand D. A, B, and C E. A and B F. B and C G. A and C
Write down the major differences between DNA and RNA.keeping in mind the concept of " central dogma" explain whether the information from protien is transfered to DNA? If yes/ No.explain