Campbell Biology, Books a la Carte Plus Mastering Biology with eText -- Access Card Package (10th Edition)
10th Edition
ISBN: 9780133922851
Author: Jane B. Reece, Lisa A. Urry, Michael L. Cain, Steven A. Wasserman, Peter V. Minorsky, Robert B. Jackson
Publisher: PEARSON
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Chapter 17, Problem 2TYU
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.
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Which of the following best describes a stop codon?
A) They are codons that indicate termination of
protein synthesis.
B) They are codons that are extra in the
genetic code and are not used.
C) They are codons that indicate when to
create new peptide bonds.
D) They are codons that signal when the RNA
strand is done being read.
E) They are codons that indicate when to
begin folding the polypeptide.
A DNA strand consists of any sequence of four kinds of nucleotides. Suppose there were only 14 different amino acids instead of 20. Which of the following statements would be correct descriptions of the minimal number of nucleotides necessary to create a genetic code?
a) 1
b)2, provided that chain termination does not require a special codon
c) 3, provided that chain termination does require a special codon
d)2, no matter how chain termination is accomplished
e) Both b and c
3)Which of the following statements are true? Choose all that apply
a)There are multiple codons possible for nearly all amino acids
b)Each stop codon also codes for an amino acid
c)Each tRNA will base pair with only one codon
d)The start codon also codes for an amino acid
e)Each codon in mRNA codes for exactly one amino acid
f)Each codon in tRNA codes for exactly one amino acid
g)Each anticodon in tRNA pairs with exactly one codon
h)Each tRNA carries exactly one type of amino acid
Chapter 17 Solutions
Campbell Biology, Books a la Carte Plus Mastering Biology with eText -- Access Card Package (10th Edition)
Ch. 17.1 - Prob. 1CCCh. 17.1 - What polypeptide product would you expect from a...Ch. 17.1 - Prob. 3CCCh. 17.1 - Prob. 4CCCh. 17.2 - MAKE CONNECTIONS In a research artide about...Ch. 17.2 - What enables RNA polymerase to start transcribing...Ch. 17.2 - Prob. 3CCCh. 17.3 - Prob. 1CCCh. 17.3 - How is RNA splicing similar to how you would watch...Ch. 17.3 - Prob. 3CC
Ch. 17.4 - What two processes ensure that the correct amino...Ch. 17.4 - Prob. 2CCCh. 17.4 - Prob. 3CCCh. 17.4 - Prob. 4CCCh. 17.4 - WH AT IF? In eukaryotic cells, mRNAs have been...Ch. 17.5 - What happens when one nucleotide pair is lost from...Ch. 17.5 - MAKE CONNECTIONS Individuals heterozygous for the...Ch. 17.5 - WHAT IF? DRAW IT The template strand of a gene...Ch. 17 - Describe the process of gene expression, by which...Ch. 17 - What are the similarities and differences in the...Ch. 17 - What function do the 5' cap and the poly-A tail...Ch. 17 - Prob. 17.4CRCh. 17 - What will be the results of chemically modifying...Ch. 17 - In eukaryotic cells, transcription cannot begin...Ch. 17 - Which of the following is not true of a codon? (A)...Ch. 17 - The anticodon of a particular tRNA molecule is (A)...Ch. 17 - Which of the following is not true of RNA...Ch. 17 - Which component is not directly involved in...Ch. 17 - Using Figure 17.6, identify a 5' 3' sequence of...Ch. 17 - Prob. 7TYUCh. 17 - Would the coupling of the processes shown in...Ch. 17 - Prob. 9TYUCh. 17 - Prob. 10TYUCh. 17 - Prob. 11TYUCh. 17 - Prob. 12TYUCh. 17 - Prob. 13TYU
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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.Similar questions
- Which of the following is NOT true regarding the genetic code and translation? a) An mRNA is typically translated in only 1 reading frame. b) There are 64 different codons. c) Multiple amino acids may be coded for by a single codon. d) mRNA sequence is the reverse complement of the template strand of DNA.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_forwardA section of the mRNA has a nucleotide sequence of CUATAUGUTGU. How many codons does this segment of mRNA represent? a) two, b) one, c) four, d) three, e) none, this molecule is not a transcript of DNAarrow_forward
- A tRNA is charged with the amino acid methionine.(i) Give the anti-codon of this tRNA.(ii) Write the Codon for methionine.(iii) Name the enzyme responsible for binding of amino acid to tRNAarrow_forward6a) Transcribe the following DNA sequence into codons. TACGCGACATTACATGAATCGTTTGGAGATTAGCCCTATTTCTCTAAGAACACGACTb) Excise(cut out) codons numbered 5, 6, and 7. Leave the remaining codons. c) Now translate the sequence . d) Explain how many amino acids are now in your polypeptide? e) What would happen to your polypeptide if either of your cysteine amino acids near the start or end of thepolypeptide were translated incorrectly. f) Based on your final polypeptide can you make the original DNA strand by doing reverse translation andtranscription? g) Explain if your polypeptide similar to your template strand or the complementary strand?arrow_forwardSuppose that a gene underwent a mutation that changed a GAA codon to UAA. (a) Name the amino acid encoded by the original triplet. (b) Identify a tRNA anticodon that could translate the nonsense UAA triplet. (c) What other amino acid could be encoded by the mutant tRNA?arrow_forward
- Which of the following is a reason why codons are NOT composed of only two nucleotides?Question 22 options: A) It happened by random chance. B) The ribosome is composed of more than 2 subunits. C) The size of tRNAs requires that more than two nucleotides be present in a codon. D) There are 20 amino acids that need to be coded for.arrow_forwardThe code is also said to be degenerate/ redundant, which means that (a) different codons can encode the same amino acid (b) the genetic code can mutate (c) the genetic code is read as a triplet (d) the genetic code is overlapping (e ) all of the abovearrow_forwardFor translation of eukaryotic mRNA sequences: a) The stop codon stops translation by blocking the ribosome. b) The tRNA is the same thing as the amino acid. c) There are two binding pockets within the ribosome where different tRNAs will bind to the mRNA. d) The first codon that is recognized by the ribosome is UAG e) The ribosome can bind to the mRNA in any location.arrow_forward
- Which of the following is not true of RNA processing?(A) Exons are cut out before mRNA leaves the nucleus.(B) Nucleotides may be added at both ends of the RNA.(C) Ribozymes may function in RNA splicing.(D) RNA splicing can be catalyzed by spliceosomes.arrow_forward16) PROTEIN SYNTHESIS: A) Describe the process of protein synthesis. Be sure to use transcription and translation in your answer (and explain the parts involved in each process) B) Why is RNA transcription a necessary process?arrow_forwardThe genetic code is thought to have evolved to maximize genetic stability by minimizing the effect on protein function of most substitution mutations (single-base changes). We will use the six arginine codons to test this idea. Consider all of the substitutions that could affect all of the six arginine codons.(a) How many total mutations are possible?(b) How many of these mutations are “silent,” in the sense that the mutantcodon is changed to another Arg codon?(c) How many of these mutations are conservative, in the sense that an Argcodon is changed to a functionally similar Lys codon?arrow_forward
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