Repair enzymes _____. a. repair only mutations that occur in mitochondrial DNA b. can only repair mutations that occur prior to replication c. can only repair mutations that occur after replication d. repair only DNA mismatch mutations e. repair only mutations that arise during replication

Repair enzymes _____. a. repair only mutations that occur in mitochondrial DNA b. can only repair mutations that occur prior to replication c. can only repair mutations that occur after replication d. repair only DNA mismatch mutations e. repair only mutations that arise during replication

Name: Repair enzymes _____. a.repair only mutations that occur in mitochon
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Description: Repair enzymes _____. a.repair only mutations that occur in mitochondrial DNA b.can only repair mutations that occur prior to replication c.can only repair mutations that occur after replication d.repair only DNA mismatch mutations e.repair onl

BIOLOGY:CONCEPTS+APPL.(LOOSELEAF)

10th Edition

ISBN:9781305967359

Author:STARR

Publisher:STARR

Chapter8: Dna Structure And Function

Section: Chapter Questions

Problem 11SA: The phrase 5to3 refers to the _________ . a. timing of DNA replication b. directionality of DNA...

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DNA Repair Systems a. counteract spontaneous and induced mutations b. counteract induced mutations only c. counteract amino acid changes introduced by mutations d. prevent DNA damage
DNA replication is described as semi-conservative because _____. A. one leading strand and one lagging strand are produced in DNA replication B. all new DNA strands are synthesized continuously C. one new DNA strand is synthesized discontinuously D. DNA replication can never produce DNA molecules which consist of both original DNA stands E. one DNA strand is the template while the complementary strand is not
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
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
When DNA replication begins,_______ . a. the two DNA strands unwind from each other b. the two DNA strands condense for base transfers c. old strands move to find new strands
The most common source of DNA mutation is _____; however, these mistakes are typically corrected. a. errors in DNA replication b. UV light c. cigarette smoke d. errors in protein synthesis e. pesticides on the food we eat
when a cell to divide, its DNA must be replicated (copied). a.List the most important participating components and their functions in replication b.why is it important that the replication goes right and that relatively few mutations occur during the replication? c.Will the offspring of the individual who received a mutation inherit the mutation
The phrase “5 prime to 3 prime” refers to the_______ . a. timing of DNA replication b. directionality of DNA synthesis c. number of phosphate groups
Molecule involved in joining segmented nucleotide strands is... O a. DNA ligase O b. Ribosomes c. RNA polymerase d. DNA polymerase ge F5 F6 F7 F10 Scrol F8 F9
1 The role of DNA polymerases in DNA replication is to _____.? A attach free nucleotides to the new strand B link together short strands of DNA C synthesize an RNA primer to initiate DNA strand synthesis D separate the two strands of DNA 2 Cell A requires high concentrations of nicotinamide adenine dinucleotide phosphate (NADPH). Which pathways is the most active to meet the metabolic needs? A Beta-oxidation and ketogenesis B Glycolysis and glycogenolysis C Glycolysis and pentose phosphate pathway D Glycolysis, citric acid cycle and electron transport chain 3 Absence of glucose -6 phosphatase will result in the buildup of substrate A that feeds into ___. A gluconeogenesis B pentose phosphate pathway C Glucose-Alanine cycle D Cori cycle 4 The formation of pyrimidine dimers is a result from ___. A spontaneous errors during DNA replication B exposure to ultraviolet radiation C exposure to cigarette smoke D exposure to aflatoxins i need help on…
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
The initial mechanism for repairing nucleotide errors in DNA is ________. a. mismatch repair b. DNA polymerase proofreading c. nucleotide excision repair d. thymine dimers

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	a.	repair only mutations that occur in mitochondrial DNA
	b.	can only repair mutations that occur prior to replication
	c.	can only repair mutations that occur after replication
	d.	repair only DNA mismatch mutations
	e.	repair only mutations that arise during replication