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 18, Problem 20RQ
Summary Introduction
To review:
The concept behind the viruses causing mutations.
Introduction:
Mutation is explained as the change in the sequence of deoxyribonucleic acid (DNA), which consequently leads to altered expression of proteins. Mutations can be caused due to various factor, such as radiations, UV (ultraviolet) rays causing pyrimidine dimers, carcinogenic chemicals causing random mutations, replication errors, and viruses as well.
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A base change that has no discernible effect is called a____________________ mutation.
If Adenine was added where Guanine should have been added, this would be an example of a
___________________ mutation.
A _____________________ is a multienzyme complex thatsynthesizes RNA primers during E. coli DNA replication.
Chapter 18 Solutions
Biochemistry: The Molecular Basis of Life
Ch. 18 - Prob. 1QCh. 18 - Prob. 2QCh. 18 - Prob. 3QCh. 18 - Prob. 4QCh. 18 - Prob. 5QCh. 18 - Prob. 1RQCh. 18 - Prob. 2RQCh. 18 - Prob. 3RQCh. 18 - Prob. 4RQCh. 18 - Prob. 5RQ
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- Question 45 When TRNAS and rRNAs have bases that H-bonds with other bases far apart from each other, the RNA molecules assume its secondary and tertiary structure. A) True B) Falsearrow_forwardThe genome’s functional gene products are either _____________ or _____________.arrow_forwardSequence changes in DNA are called ______________.arrow_forward
- Noncoding DNA sequences are called __________________.arrow_forwardA _____________ is a multienzyme complex that synthesizes RNA primers in E. coli DNA replication.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
- Question 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_forwardThe eukaryotic mRNA is protected from degradation by a 3′ _____________.arrow_forwardAn inappropriate base change that has no discernible effect is called a _____________ mutation.arrow_forward
- . ___________________________ factors are proteins thatregulate or initiate RNA synthesis by binding directly orindirectly to specific DNA sequences called responseelements.arrow_forwardQuestion 49 The Sanger method of DNA sequencing follows the principle of complementarity just like in the replication process. A) True B) Falsearrow_forward_____________ are the linear sequences of nucleotides in an organism’s genetic information.arrow_forward
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