EBK BIOLOGY
11th Edition
ISBN: 8220102797352
Author: Raven
Publisher: YUZU
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Textbook Question
Chapter 15, Problem 3A
The enzyme that forms peptide bonds is called peptidyl transferase because it transfers
a. a new amino acid from a tRNA to the growing peptide.
b. the growing peptide from a tRNA to the next amino acid.
c. the peptide from one amino acid to another.
d. the peptide from the ribosome to a charged tRNA.
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Students have asked these similar questions
Which 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.
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 acid
Which 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 above
Chapter 15 Solutions
EBK BIOLOGY
Ch. 15 - The experiments with nutritional mutants in...Ch. 15 - What is the central dogma of molecular biology? a....Ch. 15 - In the genetic code, one codon a. consists of...Ch. 15 - Eukaryotic transcription differs from prokaryotic...Ch. 15 - An anticodon would be found on which of the...Ch. 15 - RNA polymerase binds to a ________ to initiate...Ch. 15 - During translation, the codon in mRNA is actually...Ch. 15 - You have mutants that all affect the same...Ch. 15 - The splicing process a. occurs in prokaryotes. b....Ch. 15 - The enzyme that forms peptide bonds is called...
Ch. 15 - In comparing gene expression in prokaryotes and...Ch. 15 - The codon CCA could be mutated to produce a. a...Ch. 15 - An inversion will a. necessarily cause a mutant...Ch. 15 - What is the relationship between mutations and...Ch. 15 - Prob. 1SCh. 15 - Frameshift mutations often result in truncated...Ch. 15 - Describe how each of the following mutations will...Ch. 15 - There are a number of features that are unique 10...
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- The aminoacyl-tRNA synthetase enzymes are responsible for: O A. matching each tRNA with the appropriate mRNA codon. O B. catalyzing the enzymatic step of peptide bond formation during translation. O C. synthesizing tRNA molecules in the nucleus from tRNA genes. O D. adding amino acids to appropriate tRNAS (charging the tRNA). O E. regulating the process of amino acid synthesis.arrow_forwardA 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? O A. The tRNA will not bind to this codon. O B. Translation stops and the protein is released. O Č. The wrong tRNA is added to the protein chain. D. Translation stops and the protein remains bound to the ribosome. vered MacBook Air 80 F3 D00 D00 F4 F2 F5 % & 23arrow_forwardOnce a peptide bond has been formed between the amino acid attached to the TRNA in the P site and the amino acid associated with the TRNA in the A site, what process occurs next? a. translocation of the ribosome along the mRNA b. binding of a new tRNA in the E site C. scanning for the start codon d. release of the peptide from the TRNAarrow_forward
- What site on the ribosome is the place where a tRNA molecule leaves the ribosome after attaching its amino acid to the growing chain of amino acids? a. E site b. P site c. A site d. the small ribosomal subunit Please respond as soon as possiblearrow_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_forwardIn which of the ribosomal sites, the A site, P site, and/or E site, could the following be found? A. A tRNA without an amino acid attached B. A tRNA with a polypeptide attached C. A tRNA with a single amino acid attachedarrow_forward
- 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.arrow_forwardA 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.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
- Which 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_forwardFor 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.arrow_forwardWhich 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.arrow_forward
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