Genetics: Analysis and Principles
6th Edition
ISBN: 9781259616020
Author: Robert J. Brooker Professor Dr.
Publisher: McGraw-Hill Education
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Textbook Question
Chapter 12.5, Problem 1COMQ
Which of the following is not a key difference between bacteria and eukaryotes?
a. Initiation of transcription requires more proteins in eukaryotes.
b. A 7-methylguanosine cap is added only to eukaryotic mRNAs.
c. Splicing is common in complex eukaryotes but not in bacteria.
d. All of the above are key differences.
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Which of the following statements best describes the promoter of a protein-coding gene?
A.
The promoter is a protein that recruits RNA polymerase.
B.
The promoter is part of the RNA molecule itself.
C.
The promoter is a site found on RNA polymerase.
D.
The promoter contains the AUG start codon.
E.
The promoter is a nontranscribed region of a gene.
If 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.
When would a ribosome bind to a promoter sequence?
A) It wouldn't. A promoter is a DNA sequence, and ribosomes don't bind to DNA.
B) When the ribosome needs to transcribe the gene that that promoter controls.
C) When the ribosome is translating the DNA sequence of a gene.
D) When there is a start codon (AUG) in the promoter sequence.
.
Chapter 12 Solutions
Genetics: Analysis and Principles
Ch. 12.1 - 1. Which of the following base sequences is used...Ch. 12.1 - Prob. 2COMQCh. 12.2 - With regard to a promoter, a transcriptional start...Ch. 12.2 - Prob. 2COMQCh. 12.2 - 3. Sigma factor is needed during which stage(s) of...Ch. 12.2 - A uracil-rich sequence occurs at the end of the...Ch. 12.3 - Which RNA polymerase in eukaryotes is responsible...Ch. 12.3 - Prob. 2COMQCh. 12.3 - Prob. 3COMQCh. 12.3 - Prob. 4COMQ
Ch. 12.4 - Which of the following are examples of RNA...Ch. 12.4 - A ribozyme is a. a complex between RNA and a...Ch. 12.4 - Prob. 3COMQCh. 12.4 - Prob. 4COMQCh. 12.5 - 1. Which of the following is not a key difference...Ch. 12 - Prob. 1CONQCh. 12 - Prob. 2CONQCh. 12 - Prob. 3CONQCh. 12 - Prob. 4CONQCh. 12 - 5. Mutations in bacterial promoters may increase...Ch. 12 - Prob. 6CONQCh. 12 - 7. In Chapter 9, we considered the dimensions of...Ch. 12 - 8. A mutation within a gene sequence changes the...Ch. 12 - Prob. 9CONQCh. 12 - At the molecular level, describe how factor...Ch. 12 - Prob. 11CONQCh. 12 - What is the complementarity rule that governs the...Ch. 12 - 13. Describe the movement of the open complex...Ch. 12 - 14. Describe what happens to the chemical bonding...Ch. 12 - Prob. 15CONQCh. 12 - Prob. 16CONQCh. 12 - Prob. 17CONQCh. 12 - Mutations that occur at the end of a gene may...Ch. 12 - If the following RNA polymerases were missing from...Ch. 12 - 20. What sequence elements are found within the...Ch. 12 - 21. For each of the following transcription...Ch. 12 - 22. Describe the allosteric and torpedo models for...Ch. 12 - Which eukaryotic transcription factor(s) shown in...Ch. 12 - 24. The initiation phase of eukaryotic...Ch. 12 - A eukaryotic protein-encoding gene contains two...Ch. 12 - 26. Describe the processing events that occur...Ch. 12 - Prob. 27CONQCh. 12 - Prob. 28CONQCh. 12 - Prob. 29CONQCh. 12 - Prob. 30CONQCh. 12 - 31. In eukaryotes, what types of modifications...Ch. 12 - Prob. 32CONQCh. 12 - Prob. 33CONQCh. 12 - 34. Figure 12.21 shows the products of alternative...Ch. 12 - 35. The processing of ribosomal RNA in eukaryotes...Ch. 12 - Prob. 36CONQCh. 12 - Prob. 37CONQCh. 12 - After the intron (which is in a lariat...Ch. 12 - Prob. 1EQCh. 12 - 2. Chapter 21 describes a technique known as...Ch. 12 - Prob. 3EQCh. 12 - As described in Chapter 21 and in experimental...Ch. 12 - Prob. 5EQCh. 12 - Prob. 6EQCh. 12 - 1. Based on your knowledge of introns and pre-mRNA...Ch. 12 - Discuss the types of RNA transcripts and the...
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- If you want to express a eukaryotic gene in a bacterial cell, you ned to (select all that apply): a.) add a bacterial promoter in front of the gene b.) remove introns from the gene c.) add a polyA tail sequence d.) add eukaryotic tRNAsarrow_forwardThe function of the genetic code is toa. promote transcription.b. specify the amino acids within a polypeptide.c. alter the sequence of DNA.d. do none of the above.arrow_forwardWhich 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.arrow_forward
- Which of the following mutations would be most likely to havea harmful effect on an organism?(A) a deletion of three nucleotides near the middle of a gene(B) a single nucleotide deletion in the middle of an intron(C) a single nucleotide deletion near the end of the codingsequence(D) a single nucleotide insertion downstream of, and close to,the start of the coding sequencearrow_forwardA 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_forward
- Which 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_forwardThe Human Genome Project resulted in the identification of 20,000 genes that code for proteins in humans. On average, each gene can code for 4 different proteins. Which of the following processes explains how a single gene could code for more than one protein? A) the central dogma of molecular biology B) mutations C) alternative splicing D) redundancy in the genetic code E) the fact that there are three stop codonsarrow_forwardWhich of the following plays a major part in determining whether or not RNA polymerase will transcribe a parti sequence? Select all that apply. A. A ribosome is already bonded to the gene sequence B. A complete set of transcription factors bind to DNA associated with that gene C. The chromatin structure is loosened in the region of that gene D. RNA polymerase binds to the promoter of that gene ..arrow_forward
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