Biology
4th Edition
ISBN: 9781259188121
Author: Peter Stiling, Robert Brooker, Linda Graham, Eric Widmaier
Publisher: McGraw-Hill Education
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Chapter 13, Problem 2TY
Summary Introduction
Introduction: Process of gene regulation is very important in prokaryotic and eukaryotic organisms. Gene regulation serves the purpose of expression of genes through which formation of functional proteins takes place.
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Which of the following is true of transcription factors?
A)The same transcription factors are found in all cell types.
B)They can increase or decrease gene expression.
C)They are a type of cis-acting element.
D)They bind only to promoters.
Which of the following is an example of a transcription factor?
A) gene
B) a repressor
C) a ribosome
D) an intron
Which of the following statements about gene regulation is false?
a. An operon contains DNA sequences that regulates its own expression.
b. The operator region can only be bound by an activator protein.
c. Transcription factors can affect the binding of RNA polymerase to the promoter.
d. A repressor is a transcription factor that hinders gene transcription.
Chapter 13 Solutions
Biology
Ch. 13.1 - Prob. 1CCCh. 13.2 - Which genes are under the control of the lac...Ch. 13.2 - With regard to regulatory proteins and small...Ch. 13.2 - What were the key observations made by Jacob,...Ch. 13.2 - CoreSKILL What was the eventual hypothesis...Ch. 13.2 - Prob. 3EQCh. 13.2 - Core Skill: Connections Look back at Fig 9.12....Ch. 13.2 - What are the advantages of having both an...Ch. 13.2 - Prob. 4CCCh. 13.4 - Prob. 1CC
Ch. 13.4 - Prob. 2CCCh. 13.4 - Prob. 1BCCh. 13.6 - Prob. 1CCCh. 13.6 - Prob. 2CCCh. 13 - Prob. 1TYCh. 13 - Prob. 2TYCh. 13 - Transcription factors that bind to DNA and...Ch. 13 - Prob. 4TYCh. 13 - For the lac operon, what would be the expected...Ch. 13 - Prob. 6TYCh. 13 - The trp operon is considered _____ blank operon...Ch. 13 - Prob. 8TYCh. 13 - Prob. 9TYCh. 13 - _____ blank refers to the process that allows a...Ch. 13 - Prob. 1CQCh. 13 - Transcriptional regulation often involves a...Ch. 13 - Prob. 3CQCh. 13 - Discuss the advantages and disadvantages of...Ch. 13 - Discuss the advantages and disadvantages of...
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- Muscle cells differ from nerve cells mainly because they(A) express different genes.(B) contain different genes.(C) use different genetic codes.(D) have unique ribosomes.arrow_forwardWhich of the following is characteristic of genes and gene regulation in both bacteria and eukaryotes? (a) promoters (b) non-coding DNA within coding sequences (c) enhancers (d) operons (e) DNA located in a nucleusarrow_forwardA promoter is ______. a. a specific sequence of DNA nucleotides b. a specific sequence of RNA nucleotides c. a protein that binds to DNA d. an enzyme that synthesizes RNAarrow_forward
- A mutation that changes the sequence of nucleotides in a promoter would result in a change in a. The amino acid sequence of the corresponding protein b. The base sequence of the corresponding mRNA c. How frequently the corresponding gene is transcribed d. The fidelity of translation of the corresponding mRNA 1 pointsarrow_forwardTo facilitate movement of mRNA from the nucleus into the cytoplasm, what is added to the 3’ end of mRNA? a) Ribosomes b)Transcription factors c) A cap of modified nucleotides d) Modified tRNA molecules e) A Poly-a-tailarrow_forwardWhich of the following best represents the central dogma of geneexpression?a. During transcription, DNA codes for polypeptides.b. During transcription, DNA codes for mRNA, which codes forpolypeptides during translation.c. During translation, DNA codes for mRNA, which codes forpolypeptides during transcription.d. none of the abovearrow_forward
- Which of the following are possible reasons that a cell would regulate its expression of a gene? (Select all that apply.) (a) an increased need for a particular enzyme (b) a decreased need for a particular enzyme (c) increasing temperature in the external environment (d) changing needs as an organism ages (e) deatharrow_forwardWhich of the following is true of operons?a. They consist of a coordinated set of genes, all of which are regulated as a single unit.b. They may be inducible or repressible.c. Only bacteria and archaea utilize operons.d. All of the above are true.arrow_forwardIf a mutation deletes the promoter in a eukrayotic gene, which of the following most accurately describes its consequence? A. There will be no mRNA or polypeptide made. B. The mRNA will be made but no polypeptide is made. C. The mRNA will not be processed properly. D. Nothing will happen. It is a silent mutation.arrow_forward
- If a mutation deletes the start codon in a eukrayotic gene, which of the following most accurately describes its consequence? A. There will be no mRNA or polypeptide made. B. The mRNA will be made but no polypeptide is made. C. The mRNA will not be processed properly. D. Nothing will happen. It is a silent mutation.arrow_forwardWhich of the following is the best description of a transcription factor? A. A protein that brings the correct nucleotides to RNA polymerase B. A protein that binds to specific DNA sequences C. A DNA sequence that binds to RNA polymerase D. A modification that is made to mRNA to help it be exported from the nucleus. .arrow_forwardWhich of the following is the definition of a gene? A. RNA that delivers amino acids to a ribosome during translation B. A unit of information encoded in the sequence of nucleotide bases in DNA C. The RNA component of ribosomes D. RNA that carries a protein-building messagearrow_forward
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