Biochemistry: The Molecular Basis of Life
6th Edition
ISBN: 9780190209896
Author: Trudy McKee, James R. McKee
Publisher: Oxford University Press
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Chapter 17, Problem 62TQ
Summary Introduction
To review:
The isolation of the mitochondrial deoxyribonucleic acid (DNA) without the contamination of nuclear DNA.
Introduction:
The cells in eukaryotes have a double membrane-bound organelle, which is called the mitochondria. This organelle has its own genetic material, known as mitochondrial DNA.
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A base change that has no discernible effect is called a____________________ mutation.
The purpose of mitosis in human cells is for the production of two diploid, _________________ cells.
Sequence changes in DNA are called ______________.
Chapter 17 Solutions
Biochemistry: The Molecular Basis of Life
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- Noncoding DNA sequences are called __________________.arrow_forwardExpressed sequences of DNA are called ________________.arrow_forwardQUESTION NO. 1 Patients with the rare genetic disease xeroderma pigmentosum (XP) are very sensitive to light and are highly susceptible to skin cancers. The study of such patients has enhanced our knowledge of DNA repair because XP is caused by defective DNA repair nucleotide excision repair. (A variant, XP-V, is deficient in postreplication repair.) In nucleotide excision repair A. removal of the damaged bases occurs on only one strand of the DNA. B. only thymine dimers generated by UV light can be removed . C. the excision nuclease is an exonuclease. D. a single multifunctional enzyme carries out the repair process. E. only the damaged nucleotides are removed. QUESTION NO.2 Homologous recombination: A. occurs only between two segments from the same DNA molecule. B. requires that a specific DNA sequence be present. C. requires one of the duplexes undergoing recombination be nicked in both strands. D. involves a…arrow_forward
- The genome’s functional gene products are either _____________ or _____________.arrow_forwardQuestion 49 The Sanger method of DNA sequencing follows the principle of complementarity just like in the replication process. A) True B) Falsearrow_forwardA _____________ is a multienzyme complex that synthesizes RNA primers in E. coli DNA replication.arrow_forward
- The eukaryotic mRNA is protected from degradation by a 3′ _____________.arrow_forwardQuestion 1. Enzymes, proteins and deoxyribonucleic acid (DNA) macromolecules. Enzymes are not only speed up the reaction, but also are necessary for DNA repreduction. are important biological a) Compare the process of protein synthesis between eukaryote mRNA and viral RNA b) With the aid of a diagram, draw an adapter molecule that recognizes the codons of mRNA and explain its functions in DNA translation.arrow_forwardWhen nitrogenous bases in single-stranded polynucleotides are incorporated into doublestranded molecules, base pair formation results in altered UV light absorption. This is called the _____________ effectarrow_forward
- An enzyme called _____________________ catalyzes theformation of a covalent phosphodiester bond between the 3′OH end of one DNA strand and the 5′ phosphate end of anadjacent strand during DNA replication.arrow_forwardDNA sequences in which multiple copies are arranged nextto each other are called ____________________.arrow_forwardQuestion 47 The proofreading of DNA is essential for faithful replication. A True B) Falsearrow_forward
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