Study Guide for Campbell Biology
11th Edition
ISBN: 9780134443775
Author: Lisa A. Urry, Michael L. Cain, Steven A. Wasserman, Peter V. Minorsky, Jane B. Reece, Martha R. Taylor, Michael A. Pollock
Publisher: PEARSON
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Textbook Question
Chapter 17, Problem 6IQ
In the following diagrams of polypeptide synthesis, name the stages (1–4), identify the components (a–1), and then briefly describe what happens in each stage. (This diagram does not include the initiation stage.)
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Sickle cell anemia is a widespread disease in many African countries and can be caused by a
change in the amino acid sequence from glutamic acid to valine. A patient is diagnosed with
the disease and a genetic fingerprint reveals the following DNA sequence for the gene:
(a)
(b)
(c)
(d)
(e)
Write down the mRNA sequence for the given DNA sense strand indicating the
polarity.
Derive the polypeptide from the mRNA molecule using the table of the genetic code
(Table Q1 below) again indicating the polarity of the peptide chain.
Indicate the position in the DNA molecule that could have caused the disease and write
down all possible point mutations in the DNA sequence that could have caused it. [
The polypeptide chain is polymerized at the ribosomes using t-RNA molecules. Write
down all possible t-RNA molecules with their anti-codons that are used to polymerize
the amino acid VAL. Indicate the polarity.
3'-TAC TGA GCA AGA TTA CAT ACT-5'
Explain what is meant by redundancy of the genetic code.…
a) Identify three types of RNA and provide a description of each and the role they
play in protein synthesis.
(6 marks)
b) Use the DNA sequence below to answer the following questions.
3' - TACGAACGAGTGCCCCAAAATT -5'
What is the complementary DNA strand?
(1 mark)
What is the nucleotide sequence of the mRNA strand transcribed from the initial
DNA strand?
(1 mark)
Provide an alternative mRNA sequence with four changes that would translate to the
same amino acid sequence. (2 marks)
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TRUE OR FALSE
a) The structure of the purines and pyrimidines make them able to undergo keto-enol tautomerism.
b) A unique 5'CCA terminal sequence is found in all tRNAs to be able to carry the correct amino acid to the ribosome.
Chapter 17 Solutions
Study Guide for Campbell Biology
Ch. 17 - a. In what three ways does RNA differ from DNA? b....Ch. 17 - Prob. 2IQCh. 17 - Prob. 3IQCh. 17 - How does the mRNA that leaves the nucleus differ...Ch. 17 - Prob. 5IQCh. 17 - In the following diagrams of polypeptide...Ch. 17 - What determines if a ribosome becomes bound to the...Ch. 17 - Define the following terms and explain what type...Ch. 17 - You have been introduced to several types of RNA...Ch. 17 - Prob. 2SYK
Ch. 17 - What is the genetic code? Explain redundancy and...Ch. 17 - Prepare a concept map showing the types and...Ch. 17 - Prob. 1TYKCh. 17 - Transcription involves the transfer of information...Ch. 17 - Prob. 3TYKCh. 17 - Prob. 4TYKCh. 17 - Which of the following is a statement of the...Ch. 17 - Prob. 6TYKCh. 17 - Prob. 7TYKCh. 17 - Prob. 8TYKCh. 17 - Which of the following is true of RNA processing?...Ch. 17 - Prob. 10TYKCh. 17 - Prob. 11TYKCh. 17 - Prob. 12TYKCh. 17 - Prob. 13TYKCh. 17 - Prob. 14TYKCh. 17 - What type of bonding is responsible for...Ch. 17 - Prob. 16TYKCh. 17 - Prob. 17TYKCh. 17 - Prob. 18TYKCh. 17 - Prob. 19TYKCh. 17 - Prob. 20TYKCh. 17 - Prob. 21TYKCh. 17 - Prob. 22TYKCh. 17 - Prob. 23TYKCh. 17 - Prob. 24TYKCh. 17 - Prob. 25TYKCh. 17 - Prob. 26TYKCh. 17 - Prob. 27TYKCh. 17 - Prob. 28TYK
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- (b) Hemoglobin is made of B-globin subunits. The first few mRNA nucleotides for B- globin are given by: (1) (iii) (iv) Write down the DNA sequence that has led to this mRNA and indicate the sense and non-sense strands and the polarity. CE Derive the polypeptide for the sequence using the table of the genetic code (Table Q1 below) and indicate the polarity of the polypeptide chain. First Position (5' end) U A single point mutation in mRNA sequence can cause sickle cell anemia by changing the amino acid Glu to Val. For the given mRNA, indicate the point mutations for the first Glu in the polypeptide sequence that can cause this disease. 5'-AUGGUCCACCUGACUCCUGAGGAGAAG...UGA-3' C The polypeptide of B-globin contains the amino acid Leu. Write down all the anticodons of the tRNA molecules that can potentially code for Val. Indicate the polarity of the anti-codon. A G Table 1. The Codons of the Genetic Code Second Position U Phe Phe Leu Leu Leu Leu Leu Leu Ile Ile Ile Met-Start Val Val Val…arrow_forwardEach type of molecule listed below is recognized by a specific class of nuclear import receptor (importin) or nuclear export receptor (exportin). For each type of molecule, state whether you think it is recognized by an importin or exportin and explain why (in terms of where that molecule is synthesized, what that molecule does, and where it does it). (a) RNA polyermase II: (b) ribosomal protein: (iii) †RNA:arrow_forward1) Define the following terms as they relate to protein synthesis (translation). A) initiation B) elongation C) termination 2) Given the following coding strand sequence of DNA, what is the template strand sequence? 5'-ATGCGCTGAC-3' 3) Given the following coding strand sequence of DNA, what is the corresponding mRNA sequence? 5'-ATGCGCTGAC-3' 4) Use the genetic code and translate the following DNA coding strand sequence. 5' ATG ATA AAT ACC TAG 3' 5) Introduce a mutation to the DNA sequence and describe its effect on the protein sequence. 1 1arrow_forward
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