Campbell Biology: Custom Edition
18th Edition
ISBN: 9781323717271
Author: Urry, Cain, Wasserman, Minorsky, Reece
Publisher: PEARSON C
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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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Students have asked these similar questions
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: Custom Edition
Ch. 17.1 - Prob. 1CCCh. 17.1 - What polypeptide product would you expect from a...Ch. 17.1 - Prob. 3CCCh. 17.2 - MAKE CONNECTIONS In a research artide about...Ch. 17.2 - What enables RNA polymerase to start transcribing...Ch. 17.2 - WHAT IF? Suppose X-rays caused a sequence change...Ch. 17.3 - There are about 20,000 human protein-coding genes....Ch. 17.3 - How is RNA splicing similar to how you would watch...Ch. 17.3 - Prob. 3CCCh. 17.4 - What two processes ensure that the correct amino...
Ch. 17.4 - Prob. 2CCCh. 17.4 - Prob. 3CCCh. 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 - scientific inquiry Knowing that the genetic code...Ch. 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_forwardWhich is/are NOT true of protein isoforms? They are related in structure and function. B) They have identical base sequence. (c) they are the result of alternative splicing They have variable amino acid sequencearrow_forward
- A 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_forwardA 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_forwardWhich of the following codons is not a termination codon for protein synthesis?a) UUUb) UAGc) UAAd) UGAarrow_forward
- If a protein is made up of 1000 amino acids 1) How many nucleotides will its mRNA contain between (and including) the start and stop codon? _____ 2) How many codons will this mRNA contain? _____ 3) How many tRNA molecules will be needed to make that protein? _____arrow_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_forwardWhen the ribosome "reads" the codon UAG, UGA or UAA... A) the polypeptide is released from ribosome but ribosome continues reading the mRNA B) the proper tRNA enters the ribosome C) translation begins D) polypeptide is released from the ribosome and translation endsarrow_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
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