WHAT IS LIFE? A GUIDE TO BIO 3E+LAUNCHPA
3rd Edition
ISBN: 9781319103316
Author: PHELAN
Publisher: Macmillan Higher Education
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Chapter 5, Problem 7MC
Summary Introduction
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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.
Which of these molecules would have the most monomers (i.e. be longest)?
a) RNA polymer that comprises the transfer RNA
b) mRNA transcript just after transcription
c) polypeptide chain released by ribosome
d) mRNA transcript that a ribosome attaches to
introns:
A)are parts of the new strand replaced with DNA nucleotides during replication
B)Are joined together with other introns to make the mature mRNA
C)are found in prokaryotic cells
D)are binding sites for repressors; therefore introns are involved in controlling gene expression
E)do not contain codons or information about proteins; they are removed from the mRNA during splicing/editing of
mRNA
Chapter 5 Solutions
WHAT IS LIFE? A GUIDE TO BIO 3E+LAUNCHPA
Ch. 5 - Prob. 1SACh. 5 - Prob. 2SACh. 5 - Prob. 3SACh. 5 - Prob. 4SACh. 5 - Prob. 5SACh. 5 - Prob. 6SACh. 5 - Prob. 7SACh. 5 - Prob. 8SACh. 5 - Prob. 9SACh. 5 - Prob. 10SA
Ch. 5 - Prob. 11SACh. 5 - Prob. 12SACh. 5 - Prob. 13SACh. 5 - Prob. 14SACh. 5 - Prob. 15SACh. 5 - Prob. 1MCCh. 5 - Prob. 2MCCh. 5 - Prob. 3MCCh. 5 - Prob. 4MCCh. 5 - Prob. 5MCCh. 5 - Prob. 6MCCh. 5 - Prob. 7MCCh. 5 - Prob. 8MCCh. 5 - Prob. 9MCCh. 5 - Prob. 10MCCh. 5 - Prob. 11MCCh. 5 - Prob. 12MCCh. 5 - Prob. 13MCCh. 5 - Prob. 14MCCh. 5 - Prob. 15MCCh. 5 - Prob. 16MCCh. 5 - Prob. 17MC
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- The codon on the ________ matches with the anticodon on the ________ to direct the addition of the correct amino acid to the growing polypeptide chain. A) mRNA / tRNA B) tRNA / mRNA C) DNA / mRNA D) tRNA / rRNAarrow_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_forwardTranscription and translation are separate processes in gene expression; however, they have similarities. The following terms all relate to translation. Which of these has a role that is most similar to that of the transcription start site during transcription? A)Start codon B)Stop codon C)tRNA D)Amino acidarrow_forward
- Identify 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_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_forwardThe sequence A is read by RNA polymerase to produce an mRNA that is translated by the ribosome: Choose the sequence that would correspond to that mRNA. A: 3’ – TACGGAACG – 5’ B) 3’ – AUGCCUUGC – 5’ C) 5’ – AUGCCUUGC – 3’ D) 3’ – UACGGAACG – 5’ E) 5’ – UACGGAACG – 3’arrow_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_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_forwardWhich of the following is an example of a transcription factor? A) gene B) a repressor C) a ribosome D) an intronarrow_forward
- All of these materials are needed for translation EXCEPT: a) amino acids b) mRNA c) tRNA d) RNA polymerase e)ribosomesarrow_forwardAll of these materials are needed for translation EXCEPT: O A) TRNA O B) ribosomes C) RNA polymerase D) MRNA E) amino acidsarrow_forwardMatch the function in translation to each type of RNA (one RNA has two listed functions). 1) Carry an amino acid that is encoded by a codon. 2) Serve as the link between DNA and proteins. 3) Create the backbone of the ribosome 4) Has triplet-nucleotide codons that encode the primary structure of proteins. Here are the choices for the questions: a) tRNA b) rRNA c) mRNAarrow_forward
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