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Name: Which of the following is not a necessary component for DNA synthesis?
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Description: 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

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Biology

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

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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Which of the following would be most likely to cause a mutation? A. the addition of nucleotides to the 3’ end of the growing strand B. the insertion of a mismatched nucleotide into a DNA strand C. the unwinding of the DNA strand D. the synthesis of short stretches of DNA
The problem of synthesizing the lagging strand, in the sense that DNA synthesis can only occur in one direction, is manifested inA. creation of primers every so often as more of the template strand isuntwisted.B. formation of shorter DNA strands called Okazaki fragments.C. the need for the enzyme ligase to link short DNA strands together.D. All of the above choices are correct.
In the dideoxy-sequencing reaction, what terminates DNA synthesis at a particular base? a. The absence of a base on the ddNTP halts the DNA polymerase. b. The ddNTP causes a break in the sugar–phosphate backbone. c. DNA polymerase will not incorporate a ddNTP into the growing DNA strand. d. The absence of a 3′-OH group on the ddNTP prevents the addition of another nucleotide.
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
DNA strands are anti-parallel and DNA polymerase can only synthesize DNA in a 5' to 3' direction. How does the enzyme synthesize both strands at the same time? A. The leading strand is sythesised in Okazaki fragments B. The lagging strand is synthesised in short Okazaki fragments. C. Only one strand is replicated. D. There are more than one DNA polymerase involved.
f an error is made during replication that is not caught by DNA polymerase, the most likely is that _____. a. DNA ligase will repair the mistake before a mutation occurs b. only the daughter strand will be mutated c. both strands of DNA will be mutated d. DNA replication will stall indefinitely e. a mutation that causes cancer will occur
During DNA replication, which of the following steps occurs first? a. synthesis of the leading strand b. synthesis of the lagging strand c. unwinding of the parental DNA duplex d. sealing of the nicks between short DNA e. synthesis of primers
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
To make a new DNA strand, which of the following is necessary? a. A template strand c. Heavy nitrogen b. Nucleotides d. Both a and b
When two adjacent bases in the same strand of DNA dimerize (form a covalent bond between them), what happens to the DNA? a. the original strand of DNA now contains a new DNA sequence b. the original strand of DNA is prevented from opening during replication, so this section of DNA will not be replicated c. the original strand of DNA is methylated, which causes the bases to mismatch d. the original strand of DNA is kinked, which prevents DNA polymerase from working properly e. the original strand of DNA is unaffected, so no additional mutations arise
Which mechanism requires the ability to distinguish between newly synthesized and template strands of DNA? a. Nucleotide selection b. DNA proofreading c. Mismatch repair d. All of the above
Which of the following describes a Z-DNA helix? a. It is inhibited by methylation of bases b. It is favored by alternating GC sequence c. It has fewer base pairs per turn than the B-DNA d. It is favored in many solutions that are relatively devoid of water