Campbell Biology: Custom Edition
18th Edition
ISBN: 9781323717271
Author: Urry, Cain, Wasserman, Minorsky, Reece
Publisher: PEARSON C
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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
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 DNA
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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- 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 diagram shows part of a pre-mRNA molecule. A G part X (a) (i) Name the two substances that make up part X. (ii) Give the sequence of bases on the DNA strand from which this pre-mRNA has been transcribed. (b) (i) Give one way in which the structure of an MRNA molecule is different from the structure of a tRNA molecule. (ii) Explain the difference between pre-mRNA and mRNA. (c) The table shows the percentage of different bases in two pre-mRNA molecules. The molecules were transcribed from the DNA in different parts of a chromosome. Part of Percentage of base chromosome A G U Middle 38 20 24 End 31 22 26arrow_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_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_forwardDescribe the key structural features of a tRNA molecule.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_forwardHow does the cell ensure that a specific amino acid (say, valine) attaches itself only to the one tRNA molecule that is specific for valine? (A) Proteins called aminoacyl DNA synthetases are responsible for bringing together the proper pair. The enzymes match the amino acid and one of the correct DNA molecules carrying the right anticodon. (B) Lipids called aminoacyl tRNA synthetases are responsible for bringing together the proper pair. The lipid binds the amino acid and one of the correct tRNA molecules carrying the right codon. (C) Enzymes called aminoacyl tRNA synthetases are responsible for bringing together the proper pair. The enzymes match the amino acid and one of the correct tRNA molecules carrying the right anticodon. (D) Enzymes called peptidyl mRNA synthetases are responsible for bringing together the proper pair. The enzymes match the amino acid and one of the correct mRNA molecules carrying the right anticodon.arrow_forward
- A segment of DNA has the followimg sequence of bases.. 5'-ATGCAATGATATTGAAGCTTA-3' a) What sequence of bases would appear in mRNA transcribed from this segment? b) Assume the first base in this mRNA is the beginning of a codon. What order of amino acid would be translated into a polypeptide synthesized along this segment? c) Give anticodons for each tRNA associated with the translation in part (b)arrow_forward3)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 acidarrow_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_forward
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