NESTER'S MICROBIOLOGY
9th Edition
ISBN: 9781264826940
Author: Anderson
Publisher: MCG
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Textbook Question
Chapter 7, Problem 6MC
Which of the following statements about gene expression is false?
a) More than one RNA polymerase can be transcribing a specific gene at a given time.
b) More than one ribosome can be translating a specific transcript at a given time.
c) Translation begins at a site called a promoter.
d) Transcription stops at a site called a terminator.
e) Some amino acids are coded for by more than one codon.
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Students have asked these similar questions
Which of the following is a possible consequence of a mutation that introduces a
premature stop codon in a gene sequence?
a) No transcription into an mRNA.
Ob) The shortening of an mRNA transcript.
c) No binding of the transcription initiation complex.
d) The shortening of an amino acids sequence.
e) No translation of the mRNA.
Transcription 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 acid
A regulatory region shows all of the following properties except
a) can be located in an exon.
b) can be located at a distance from the gene.
c) acts as a binding site for transcription factors.
d) acts as a binding site for a polymerase.
Chapter 7 Solutions
NESTER'S MICROBIOLOGY
Ch. 7 - Explain what semiconservative means with respect...Ch. 7 -
2. What is an origin of replication?
Ch. 7 - Why are primers required in DNA replication but...Ch. 7 -
4. What is polycistronic mRNA?
Ch. 7 -
5. Explain why knowing the orientation of a...Ch. 7 - What is the function of a sigma factor?Ch. 7 - Prob. 7SACh. 7 - Explain how some bacteria sense the density of...Ch. 7 -
9. Compare and contrast regulation by a repressor...Ch. 7 - Prob. 10SA
Ch. 7 - All of the following are involved in transcription...Ch. 7 -
2. All of the following are involved in DNA...Ch. 7 - All of the following are directly involved in...Ch. 7 - Using the DNA strand shown here as a template,...Ch. 7 -
5. A ribosome binds to the following mRNA at the...Ch. 7 - Which of the following statements about gene...Ch. 7 -
7. An enzyme used to synthesize the amino acid...Ch. 7 -
8. Under which of the following conditions will...Ch. 7 -
9. All of the following are characteristics of...Ch. 7 - Which of the following statements is false? a) A...Ch. 7 - A graduate student is trying to identity the gene...Ch. 7 - To isolate eukaryotic mRNA from cell lysates, a...Ch. 7 - Prob. 1CTCh. 7 -
2. In a variation of the experiment in the...
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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.Similar questions
- If a gene sequence is more tightly coiled around histones, then which of the following is the most likely consequence? A) This gene is more likely to undergo mutation as it is being expressed B) This gene is unlikely to be transcribed while in this conformation C) This gene will be transcribed often while in this conformation D) This gene will be translated more efficiently .arrow_forward26) Eukaryotes are unable to couple transcription and translation because: A) the two processes occur in separate regions of the cell B) they do not have the specialized ribosomes that occur in bacteria C) the genetic code in eukaryotes is incompatible with the formation of polyribosomes D) the mRNA of eukaryotes do not have the appropriate spacers that polycistrons allow for polyribosomes to form E) eukaryotic mRNA molecules are monocistronic. asap please.arrow_forwardWhich statement is false: A) Each type of protein ( ex: hemoglobin vs trypsionngen) varies in the length and amino acid sequence of its peptide B) After the rpocess of transcription is complete, the mRNA that is produced will continue being tranlsated by ribosomes for the rest of the cells life. mRNA never breaks down C) A ribosome will bind to an mRNA and will translate the sequence by reading one codon at a time and adding one amino acid to the peptide chain. It will stop the translation once it encounters a stop codon D) The gene for a protein provides the information on the legth of the peptide, along w the amino acid sequence so the protein can be synthesized by a ribosome E) Once mRNA has left the nucleus, ribosomes will bind to it and will follow the instructions in its sequence to make the new protienarrow_forward
- 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.arrow_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_forwardLabel these processes 1-8 (1 being the earliest time point) in the order they would occur during expression of a eukaryotic gene. a) Regulatory transcription factor binding at an enhancer b) transcription initiation c) Phosphorylation of the gene's protein product d) MRNA nuclear export e) general transcription factor binding to promoter f) chromatin remodeling to expose promoter g) splicing h) translation initiationarrow_forward
- Gene splicing all are true except - a) Complete removal of introns b) Histone mRNAs do not undergo splicing c) SnRNAs help in splicing d) Prokaryotic mRNAs do not undergo splicingarrow_forwardIf you were to hybridize a eukaryotic gene to its corresponding mRNA, the two molecules would not perfectly align. Why would it not? A) Exons contained in the gene have been removed from the mRNA via splicing.B) RNA polymerase adds introns to the mRNAC) Introns contained in the gene have been removed from the mRNA via splicing.D) RNA polymerase adds exons to the mRNAarrow_forwarda) The deacetylation of histones generally causes gene inactivation. True or false? b)During eukaryotic translation, the first contact between the ribosome and the mRNA is usually made when the small ribosomal subunit directly binds to the translational start site (Kozak sequence) on the mRNA. True or false? c)The termination of translation is carried out by a single tRNA molecule that recognizes all three stop codons. True or false? d) The deamination of cytosine, which produces uracil, is less likely to be repaired, compared to the deamination of 5-methylcytosine, which produces thymine.True or false? e)An HLH-bHLH heterodimer can bind DNA. True or false? F)Chromatin remodeling complexes posseses ATPase activity. True or false? g)Histone methylation generally causes gene inactivation. True or false? h) A pre-mRNA is cleaved downstream of its polyA signal before the transcription terminates. True or false? i) During X chromosome inactivation in female mammals, most genes are repressed…arrow_forward
- 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.arrow_forward1. True or False a) DNA bases, when coiled to histones, become inaccessible to RNA polymerase. b) Methylation silences the gene expression. c) Poly-A tail is added to the growing mRNA prior to translation.arrow_forward15) Which of the following can disrupt gene expression? A) microRNAs B) a repressor protein C) mTORS (mammalian target of rapamycin) D) All of the above 16) There are thousands of single amino acids that are translated from codons. A) True B) False For the following questions 17-20, choose the letter on the diagram that represents the structure. 17) lagging strand 18) leading strand 19) Okazaki fragment 20) RNA primer 5' 3' DNA Replication e a d 3' 5' 3¹ 5'arrow_forward
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