BIOLOGY-TEXT
5th Edition
ISBN: 9781260169621
Author: BROOKER
Publisher: MCG
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Chapter 15, Problem 2TY
Summary Introduction
Introduction: The open reading frame of mRNA helps in the synthesis of protein. The process of protein synthesis is known as translation and it takes place inside the cytoplasm of the cell. There is an involvement of a number of amino acids that forms the chains of polypeptides.
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A mutation occurs that alters the third base in an mRNA codon from a C to a G. This mutation is most likely a
A.
frameshift mutation
B.
missense mutation
C.
nonsense mutation
D.
silent mutation
Regulation of gene expression most typically occurs at the level of ______________.
Select one:
a.
transcription
b.
post-transcription
c.
post-translation
Cystic Fibrosis is caused by which of the following?
a. Replacement of three nucleotides with a new three nucleotide sequence
b. Addition of three nucleotides
c. Deletion of three nucleotides
Chapter 15 Solutions
BIOLOGY-TEXT
Ch. 15.1 - Consequences of Mutations Concept Check: Based on...Ch. 15.1 - Prob. 2CCCh. 15.2 - Prob. 1EQCh. 15.2 - Prob. 2EQCh. 15.2 - Prob. 3EQCh. 15.2 - Prob. 1CCCh. 15.3 - DNA Repair Concept Check: Which components of the...Ch. 15.3 - Why is this person so sensitive to sunlight?...Ch. 15.4 - Prob. 1CCCh. 15.4 - Prob. 2CS
Ch. 15.4 - Prob. 2CCCh. 15.4 - Prob. 3CCCh. 15.4 - Prob. 4CCCh. 15 - Prob. 1TYCh. 15 - Prob. 2TYCh. 15 - Prob. 3TYCh. 15 - Prob. 4TYCh. 15 - Prob. 5TYCh. 15 - The Ames test a. provides a way to determine if...Ch. 15 - Xeroderma pigmentosum a. is a genetic disorder...Ch. 15 - Prob. 8TYCh. 15 - Prob. 9TYCh. 15 - Prob. 10TYCh. 15 - Prob. 1CQCh. 15 - Prob. 2CQCh. 15 - Prob. 3CQCh. 15 - Prob. 1COQCh. 15 - Distinguish between spontaneous and induced...
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- Which of the following enzymes adds a new amino acid to the growing chain of a protein during protein synthesis? a. aminoacyl-tRNA synthetase b. peptidyl synthetase c. peptidyl transferase d. ribosomal synthetasearrow_forwarda mutation in dna that adds +1 ot -1 nucleotide or +2 or -2 nucleotides is called a______? (choose one answer only) A. frameshift mutation B. silent mutation C. nonsense mutation D. missense mutationarrow_forwardWhich of the following mutations is NOT a point mutation? A. Missense mutation B. Insertion mutation C. Nonsense mutation D. Silent mutationarrow_forward
- A mutation caused by a base deamination or a tautomerization is called a a. silent mutation b. transition mutation c. nonsense mutation d. missense mutationarrow_forwardSelect the letter of the choice that best completes the statement. When a change takes place in a gene, what has occurred?a. mutationb. lethal genec. congenital defectd. mutantarrow_forwardCertain introns can self-excise from RNA. a. false b. truearrow_forward
- What is the correct amino acid sequence for the mRNA code AUGCCAGUAUGA answer choices A. Tyr-Gly-His B. Met-Pro-Val C. Met-Pro-Ala-Val D. Tyr-Gly-Arg-Hisarrow_forward_______is/are removed from a new mRNA. a. Introns c. A poly-A tail b. Exons d. Amino acidsarrow_forwardBelow is a segment of RNA, transcribed from a DNA sequence. Use the codonchart to help answer the questions below. 5’ AUG/CCU/ACG/GAC/UGG/CCU 3’ a. What polypeptide would be generated by this sequence? b. The RNA is mutated to: 5’ AUGCCCACGGACUGGCCU 3’. What type of mutationhas occurred? Show the new polypeptide chain. c. The RNA is mutated to: 5’ AUGCCUACGGACGGGCCU 3’. What type of mutationhas occurred? Show the new polypeptide chain. d. The RNA is mutated to: 5’ AUGCCUACGGACUGACCU 3’. What type of mutationhas occurred? Show the new polypeptide chain.arrow_forward
- The main function of an mRNA molecule is to_______ . a. store heritable information b. carry a translatable message c. form peptide bonds between amino acidsarrow_forwardLook at the amino acid chart below that the proctor placed on a board at the front of the classroom before asking the students questions. Help Arcel characterize the DNA mutation (HbS) according to its amino acid and position. a The disease is caused by GAG20→GTG20. b The disease is caused by val6→gln6. c The disease is caused by glu6→ val6. d The disease is caused by glu20→ val20.arrow_forward8) Which of these describes the function of RNA polymerase? A. Amplifies the “message" by making multiple copies of an mRNA molecule after it has been transcribed from DNA B. Converts a protein sequence to mRNAarrow_forward
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