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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For each of the following, identify the type of RNA involved (mRNA, rRNA, or tRNA). a. Transports the correct amino acid to the ribosome, using the information encoded in the mRNA. b. Is a major component of ribosomes. c. Specifies the order of amino acids in a protein, using a series of three-base codons, where different amino acids are specified by particular codons. d. Contains a three-base anticodon that pairs with a complementary codon revealed in the mRNA. e. Assists in making the bonds that link amino acids together to make a protein.
The codon and anticodon are base-paired together during the process of translation. Which of the following is correct regarding the relationship between anticodon and codon?
A. The tRNA anticodon UCU pairs with the AGA mRNA codon.
B. The tRNA anticodon is read from the 5’ to the 3’ end.
C. A tRNA anticodon can pair with only one mRNA codon.
D. The mRNA codon ACG base pairs with the tRNA anticodon TGC.
Which of the following is TRUE in translation?
A. Amino acyl TRNA containing one amino acid is attached to the P site
B. Amino acids/peptides attached to the amino acyl tRNA at the P site are
transferred to amino acids at the A site, followed by translocation.
C. Empty TRNAS are immediately released from the ribosomes
D. The E site is always empty after translocation to receive incoming empty
TRNAS.
E. The anticodon binding to the codon is stringent, i.e. there must be
complete complementary base-pairing between the bases in the codon and
anticodon before translation can proceed.
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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- Degeneracy of the genetic code denotes the existence of which of the following? A. codons that can wobble at the 5' position B. multiple codons for a single amino acid C. codons consisting of only two bases D. base triplets that do not code for any amino acid E. codons that are not overlappingarrow_forwardWhich of the following is true about tRNA? Select one: A. All tRNAs have a CCA sequence at the 3'-end. B. All tRNAs have a CCG sequence at the 5'-end. C. All tRNAs have a CAC sequence at the 3'-end. D. All tRNAs have a CCA sequence at the 5'-end. E. All tRNAs have a CCG sequence at the 3'-end.arrow_forwardThere are 61 mRNA codons that specify an amino acid, but only 45 tRNAs. This is best explained by the fact that A. some tRNAs have anticodons that recognize two or more different codons. B. the rules for base pairing between the third base of a codon and tRNA are flexible. C. many codons are never used, so the tRNAs that recognize them are dispensable. D. A and B only E. A, B, and Carrow_forward
- Which of the following statements are accurate descriptions of the genetic code? MARK ALL THAT APPLY Select one or more: a. The genetic code is made up of triplet nucleotides that specify an amino acid. b. The genetic code is unambiguous because codons only specific a single amino acid. C. The genetic code is read in an overlapping manner. d. The genetic code is redundant because a single codon can specify more than one amino acid. e. Some amino acids are encoded by more than one codon. f. All codons of the genetic code specify amino acids.arrow_forwardWhich of the following most accurately describes the anticodon? A. Contains a sequence complementary to the codon. B. Reintroduces thymine back into the sequence and removes uracil. C. Contains the sequence in the reverse orientation (3-5 vs 5-3). D. Contains a sequence identical to the codon.arrow_forwardWhich of the following regions on the tRNA are composed of a sequence of nucleotides? a. anticodon that binds to codon in mRNA b. anticodon that binds to codon in ribosomes c. anticodon that binds to codon in tRNA synthetase d. none of the abovearrow_forward
- 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 translationarrow_forwardExamine the following base sequence – 5’ UGA 3’. It represents the anticodon region of a particular tRNA. Based on this knowledge you know that a. This tRNA would be used to stop translation. b. This tRNA would carry the amino acid Serine to the ribosome. c. This tRNA would carry the amino acid Threonine to the ribosome. d. This tRNA would bind a TCA codon on DNA. e. This tRNA would not carry any amino acid to the ribosome. f. This tRNA would carry the amino acid Leucine to the ribosome.arrow_forwardThe enzyme Aminoacyl tRNA synthetase a. is very specific, recognizes only amino acids b. adds amino acids to the tRNA anticodon c. is very specific, there is only one enzyme per cell d. is very specific, recognizes only one amino acidarrow_forward
- Which of the following statements about codons in prokaryotic cells and eukaryotic cells is correct? A. Prokaryotic codons are longer than eukaryotic codons. B. Eukaryotic codons are made of DNA, and prokaryotic codons are made of RNA. C. Prokaryotes do not have mRNA, so there are no codons. D. Codons are very similar, no matter whether the cell is prokaryotic or eukaryotic.arrow_forwardThe peptide bond formation a. occurs when two tRNAs are located inside the P and A site in the ribosome b. occurs when the anticodon recognizes the codon c. occurs when two tRNAs come in close proximity in the cell d. occurs with the help of the tRNAase enzymearrow_forwardWhich of the following nucleotide triplets best represents a codon? A. A triplet in the middle of a ribosomal RNA molecule B. A triplet separated spatially from other triplets C. A triplet in the same reading frame as an upstream AUG D. A triplet at the opposite end of tRNA from the attachment site of the amino acid E. A sequence in tRNA at the 3’ endarrow_forward
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