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 12TYK
Summary Introduction
Introduction: Enzymes are the biocatalysts that increase the
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tRNAs
a. carry amino acids
b. bind to the anticodon present in the mRNA
c. adapt the genetic information to the ribosome
d. catalyze the peptide bond
There 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 C
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.
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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- 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.arrow_forwardA ribozyme is a. a complex between RNA and a protein. b. an RNA that encodes a protein that functions as an enzyme. c. an RNA molecule with catalytic function. d. a protein that degrades RNA molecules.arrow_forwardWhich 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_forward
- The 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_forwardWhich type of RNA carries activated amino acids to the ribosome for assembly into proteins? A. mRNA. B. sRNA. C. tRNA. D. rRNA. Strands in the stem of stem-loop RNA structures are parallel. True Falsein bold is my answer but im not sure the second one i need help with it tooarrow_forwardA. rRNA is used to transfer amino acids to the ribosome. make up the large ribosomal subunit. make up the subunits of a ribosome. make up the small ribosomal subunit. B. When the full ribosome has bound to mRNA for the first time, the first codon (start codon) of the mRNA is in which site? It varies. P E Aarrow_forward
- Which part of a tRNA molecule acts as an amino acid attachment site? a. the 5' end b. the 3' end c. the anticodon d. any of thesearrow_forwardThe E site on the ribosome is a. the site which holds the TRNA carrying the growing polypeptide chain b. the site from which the developed polypeptide chain leaves the ribosomes c. the site from which the empty tRNA leaves the ribosome d. none of the options is correct e. the site which holds the TRNA carrying the next amino acid to be added to the polypeptide chainarrow_forwardThe anticodon of a tRNA is located in the a. 3′ single-stranded region of the acceptor stem. b. loop of the first stem-loop. c. loop of the second stem-loop. d. loop of the third stem-loop.arrow_forward
- During 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_forwardIn which site(s) of the ribosome could you find a tRNA with more than one amino acid bound (a peptidyl- TRNA)? a. In both the E- and P-sites. b. In both the A- and P-sites. С. Only in the A-site. d. Only in the P-site. e. Only in the E-site.arrow_forwardIf a eukaryotic mRNA has failed to have a cap attached to its 5' end, what would the negative consequence(s) be? I chose b and got this questions wrong, why is this wrong? a. The mRNA would not properly exit the nucleus. b. The mRNA would not properly bind to a ribosome. c. The mRNA would not receive a poly A tail. d. The mRNA would not use the correct start codon. e. Both a and b are correct.arrow_forward
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