Campbell Biology
12th Edition
ISBN: 9780135188743
Author: Urry
Publisher: PEARSON
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Textbook Question
Chapter 17, Problem 3TYU
The anticodon of a particular tRNA molecule is
(A) complementary to the corresponding mRNA codon.
(B) complementary to the corresponding triplet in mRNA.
(C) the part of tRNA that bonds to a specific amino acid.
(D) catalytic, making the tRNA a ribozyme.
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The 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.
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 tRNA
When 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 ends
Chapter 17 Solutions
Campbell Biology
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. 17.5 - Prob. 4CCCh. 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 - Prob. 2TYUCh. 17 - The anticodon of a particular tRNA molecule is (A)...Ch. 17 - Prob. 4TYUCh. 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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- which statement about genetic code is not true? A) mRNA is read 3 bases at a time, which are called codons. B) There is one initiator codon that codes for an amino acid. C) Each amino acid is coded for by only one codon. D) There are 3 termination codons that do not code for amino acids. E) Each codon is specific for only one amino acid. An anion has an equilibrium potential of -40 mV. What direction are the chemical and electrical forces acting on the anion at the resting membrane potential (-70 mV)? A) Both the chemical and electrical forces are directed out of the cell. B) The chemical force is directed out of the cell and the electrical force is directed into the cell. C) The chemical force is directed into the cell and the electrical force is directed out of the cell. D) There is insufficient information to answer this question. E) Both the chemical and electrical forces are directed into the cell.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_forwardA triplet of bases on an mRNA molecule is known as a(n) A) amino acid. B) anticodon. C) codon. D) ribosome-binding sequence.arrow_forward
- Suppose 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_forwardIf 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_forwardThe ribosome has 3 tRNA binding binding sites. They are a) EF1, EF2, and EF3 b) 1, 2, and 3 c) A, P, and Earrow_forward
- For 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_forwardDescribe the key structural features of a tRNA molecule.arrow_forwardIdentify the single most correct answer: a) The promoter specifies how efficient a mRNA binds to the ribosomes. Ob) An amino acid is represented by one and only one codon. Oc) Ribozymes are RNA molecules with enzymatic activities. d) Each tRNA contains a unique codon.arrow_forward
- 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.arrow_forward3) During charging of tRNAS Select an answer and submit. For keyboard navigation, use the up/down arrow keys to select an answer. a a) a GTP is used b b) an amino acid is activated using energy of an ATP c) TRNA is activated using the energy of ATP d. d) none of the abovearrow_forwardWhich of the following is true for the tRNA of eukaryote cells? tRNA is a) made of DNA and protein, b) the active site in carbohydrate synthesis, c) is a subunit that forms mRNA from the codon of DNA. d) found inside the endoplasmic reticulum, e) has the specific sequence of bases (anti codon) that interacts with the base sequence (codon) of mRNA.arrow_forward
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