Concepts of Biology
1st Edition
ISBN: 9781938168116
Author: Samantha Fowler, Rebecca Roush, James Wise
Publisher: OpenStax College
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Textbook Question
Chapter 9, Problem 7RQ
Portions of eukaryotic mRNA sequence that are removed during RNA processing are .
a. exons
b. caps
c. poly-A tails
d. introns
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a. Give the sequence of mRNA that would be transcribed off of the bottom strand and label its 5' and 3' ends.
b. translate this RNA sequence in 1a into a protein sequence
c. Give the sequence of mRNA that would be transcribed off of the top strand and label its 5' and 3' ends.
d. Translate this RNA sequence in 1c into a protein sequence
The Kozak rules determine
a. the choice of the start codon in complex eukaryotes.
b. the choice of the start codon in bacteria.
c. the site in the mRNA where translation ends.
d. how fast the mRNA is translated.
In a polyribosome, the polypeptides associated with which ribosomes will be the longest?
a. Those at the 5′ end of mRNA
b. Those at the 3′ end of mRNA
c. Those in the middle of mRNA
d. All polypeptides will be the same length.
Chapter 9 Solutions
Concepts of Biology
Ch. 9 - Figure 9.10 You isolate a cell strain in which the...Ch. 9 - Which of the following does cytosine pair with? a....Ch. 9 - Prokaryotes contain a ______ chromosome, and...Ch. 9 - DNA replicates by which of the following models?...Ch. 9 - The initial mechanism for repairing nucleotide...Ch. 9 - A promoter is ______. a. a specific sequence of...Ch. 9 - Portions of eukaryotic mRNA sequence that are...Ch. 9 - The RNA components of ribosomes are synthesized in...Ch. 9 - How long would the peptide be that is translated...Ch. 9 - Control of gene expression in eukaryotic cells...
Ch. 9 - Post-translational control refers to: a....Ch. 9 - Describe the organization of the eukaryotic...Ch. 9 - Describe the structure and complementary base...Ch. 9 - How do the linear chromosomes in eukaryotes ensure...Ch. 9 - Transcribe and translate the following DNA...Ch. 9 - Describe how controlling gene expression will...
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- _______ are removed from new mRNAs. a. Introns c. Poly-A tails b. Exons d. Amino acidsarrow_forwardWhat is one function of the 5' cap in eukaryotic mRNA? Select one: a. It is involved in translation termination. b. It is an intron splicing signal. c. It is the initial attachment site for ribosomes. d. It is involved in polyadenylation of the 5' end of the mRNAarrow_forwardIf a human gene is found to contain five introns, the mature mRNA encoded by that gene would have how many exons? a) four exons b) five exons c) six exons d) there could be multiple mRNA that contain between one and six exonsarrow_forward
- _______is/are removed from a new mRNA. a. Introns c. A poly-A tail b. Exons d. Amino acidsarrow_forwardEukaryotic mRNA is capped at the 5' end by: a. adding a poly A sequence to the 5' end. b. ligating a 7-methylguanylate via a 3’ linkage. c. methylating the base pairs near the 5’ end. d. forming a lariat structure via transesterification.arrow_forwardWhich of the following best describes tRNA? a. Provides the instructions for the amino acid sequence of a polypeptide b. Complexes with ribosomal proteins to form ribosomes c. Used for eukaryotic RNA processing d. Transports amino acids to ribosomes during translationarrow_forward
- how does eukaryotic ribosome find the mRNA to be translated? A. the sigma factor B. the shine-Dalgarno sequence C. the Inr sequence D. the 5'caparrow_forward1. Translation a)Explain the role of ribosomes in the process of protein translation.b. Explain the role of tRNA molecules in protein translation.c. Define the following terms:1. codon 2. anticodon. Explain how a codon is used in the process of translation.arrow_forwardWhich of the following best describes mRNA?Group of answer choices a) Complexes with ribosomal proteins to form ribosomes b) Transports amino acids to ribosomes during translation c) Provides the instructions for the amino acid sequence of a polypeptide d) Used for eukaryotic RNA processingarrow_forward
- What is the genetic code? a. The relationship between a three-base codon sequence and an amino acid or the end of translation b. The entire base sequence of an mRNA molecule c. The entire sequence from the promoter to the terminator of a gene d. The binding of tRNA to mRNAarrow_forwardThe anticodon … A. is complementary to the mRNA B. is found on the ribosome C. is found on the tRNA D. A and Carrow_forwardIf a eukaryotic mRNA has failed to have a cap attached to its 5' end, what would the negative consequence(s) be? I chose b and got this questions wrong, why is this wrong? a. The mRNA would not properly exit the nucleus. b. The mRNA would not properly bind to a ribosome. c. The mRNA would not receive a poly A tail. d. The mRNA would not use the correct start codon. e. Both a and b are correct.arrow_forward
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