Study Guide for Campbell Biology
11th Edition
ISBN: 9780134443775
Author: Lisa A. Urry, Michael L. Cain, Steven A. Wasserman, Peter V. Minorsky, Jane B. Reece, Martha R. Taylor, Michael A. Pollock
Publisher: PEARSON
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Chapter 17, Problem 19TYK
Summary Introduction
Introduction: A genetic code translates the genetic information encoded within the deoxyribonucleic acid (DNA) or mRNA sequence into the protein, and also determines the amino acid sequence of that protein. Nucleotides are the ubiquitous molecules and the building blocks of
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Which of the following BEST describes the characteristics and function of siRNA?
A. a short strand of RNA that can complement and inactivate a sequence of mRNA
B. a short strand of RNA that can act as a transcription factor to initiate transcription
C. a strand of DNA that can bind to and inactivate an mRNA sequence
D. a tRNA that is not able to attach to a ribosome and therefore inhibits the process of translation
If you imagine a messenger RNA molecule in the cytoplasm of a cell, which of the following will likely affect how much protein is made by translation of this message?
A. The presence of appropriate snRNPs.
B. The length of the polyA tail.
C. The strength of hydrogen bonds holding the mRNA to ribosomal RNA.
D. The ability of the mRNA to pair with itself to form a helix-turn-helix structure.
A particular tRNA is mutated so that the amino acid attachment cannot bind with the aminoacyl-tRNA synthase. What happens when an mRNA transcript contains the codon for this tRNA?
A.
The tRNA will not bind to this codon.
B.
Translation stops and the protein is released.
C
The wrong tRNA is added to the protein chain.
D.
Translation stops and the protein remains bound to the ribosome.
Chapter 17 Solutions
Study Guide for Campbell Biology
Ch. 17 - a. In what three ways does RNA differ from DNA? b....Ch. 17 - Prob. 2IQCh. 17 - Prob. 3IQCh. 17 - How does the mRNA that leaves the nucleus differ...Ch. 17 - Prob. 5IQCh. 17 - In the following diagrams of polypeptide...Ch. 17 - What determines if a ribosome becomes bound to the...Ch. 17 - Define the following terms and explain what type...Ch. 17 - You have been introduced to several types of RNA...Ch. 17 - Prob. 2SYK
Ch. 17 - What is the genetic code? Explain redundancy and...Ch. 17 - Prepare a concept map showing the types and...Ch. 17 - Prob. 1TYKCh. 17 - Transcription involves the transfer of information...Ch. 17 - Prob. 3TYKCh. 17 - Prob. 4TYKCh. 17 - Which of the following is a statement of the...Ch. 17 - Prob. 6TYKCh. 17 - Prob. 7TYKCh. 17 - Prob. 8TYKCh. 17 - Which of the following is true of RNA processing?...Ch. 17 - Prob. 10TYKCh. 17 - Prob. 11TYKCh. 17 - Prob. 12TYKCh. 17 - Prob. 13TYKCh. 17 - Prob. 14TYKCh. 17 - What type of bonding is responsible for...Ch. 17 - Prob. 16TYKCh. 17 - Prob. 17TYKCh. 17 - Prob. 18TYKCh. 17 - Prob. 19TYKCh. 17 - Prob. 20TYKCh. 17 - Prob. 21TYKCh. 17 - Prob. 22TYKCh. 17 - Prob. 23TYKCh. 17 - Prob. 24TYKCh. 17 - Prob. 25TYKCh. 17 - Prob. 26TYKCh. 17 - Prob. 27TYKCh. 17 - Prob. 28TYK
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- The ribosome is needed for translation of mRNA (a) because it has the enzyme for adding amino acids to the 5’ end of a tRNA (b) because the ribosomal RNA contains the codon which determines the sequence of amino acids in a protein (c) because it positions tRNA and mRNA so that correct pairing of codon and anti-codon can occur (d) because it has an enzyme that removes introns from mRNA (e) all of the abovearrow_forwardA promoter is ______. a. a specific sequence of DNA nucleotides b. a specific sequence of RNA nucleotides c. a protein that binds to DNA d. an enzyme that synthesizes RNAarrow_forwardThe anticodon … A. is complementary to the mRNA B. is found on the ribosome C. is found on the tRNA D. A and Carrow_forward
- What is the genetic code? a. The relationship between a three-base codon sequence and an amino acid or the end of translation b. The entire base sequence of an mRNA molecule c. The entire sequence from the promoter to the terminator of a gene d. The binding of tRNA to mRNAarrow_forwardWhich of the following best describes mRNA?Group of answer choices a) Complexes with ribosomal proteins to form ribosomes b) Transports amino acids to ribosomes during translation c) Provides the instructions for the amino acid sequence of a polypeptide d) Used for eukaryotic RNA processingarrow_forwardImagine that a mutation in a DNA molecule results in the codon CCU being changed to CCC. Both of these codons code for proline. The fact that more than one codon can code for the same amino acid is referred to as ___ a. the ambiguity of the genetic code b. the redundancy of the genetic code c. the randomness of the genetic code d. mutations in the genetic codearrow_forward
- Which of the following would explain the formation of double-stranded loops in tRNA? A. complementary base pairing B. steric interactions between the aromatic rings of the purine bases C. electronic interactions between the negatively-charged phosphate groups D. change in the conformation of the rings of the sugarsarrow_forwardWhich of the following describes the interactions between a codon and an anticodon? A. A codon and an anticodon become covalently bonded together due to the activity of the ribosome. B. A codon and anticodon do not come into direct contact because codons are in the nucleus but anticodons are in the cytoplasm. C. A codon and anticodon are attracted to each other due to hydrogen bonding. D. A codon and an anticodon are linked together by an amino acid. ..arrow_forwardDuring translation, the codon in mRNA is actually “read” by a. the A site in the ribosome. b. the P site in the ribosome. c. the anticodon in a tRNA. d. the anticodon in an amino acid.arrow_forward
- Which of the following is not true of a codon?(A) It may code for the same amino acid as another codon.(B) It never codes for more than one amino acid.(C) It extends from one end of a tRNA molecule.(D) It is the basic unit of the genetic code.arrow_forwardFinally, imagine that a mutation occurred in the codon below and an A was inserted between the two Ts. How would this affect the mRNA and the amino acid for that codon? Old DNA codon Old RNA codon Old amino acid New DNA codon New mRNA codon New amino acid T T G T A T G This would be an example of which type of a mutation?__________________________arrow_forwardThe anticodon of a particular tRNA molecule is(A) complementary to the corresponding mRNA codon.(B) complementary to the corresponding triplet in rRNA.(C) the part of tRNA that bonds to a specific amino acid.(D) catalytic, making the tRNA a ribozyme.arrow_forward
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