Microbiology: An Introduction
12th Edition
ISBN: 9780321929150
Author: Gerard J. Tortora, Berdell R. Funke, Christine L. Case
Publisher: PEARSON
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Textbook Question
Chapter 8, Problem 9MCQ
Two offspring cells are most likely to inherit which one of the following from the parent cell?
- a. a change in a
nucleotide in mRNA - b. a change in a nucleotide in tRNA
- c. a change in a nucleotide in rRNA
- d. a change in a nucleotide in DNA
- e. a change in a protein
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The basic units of information that encode the
proteins needed to grow and function as a living
organism are called:
Select one:
a. Chromosomes
O b. Genes
c. Mutations
O d. Cells
O e. Mendel's postulates
Which of the following statements about genes is incorrect?
Select one:
O a. During fertilization, both the sperm and the ovum contribute genes to the resulting fertilized egg.
b. Genetic differences can result from changes in the DNA called mutations.
O c. Genes correspond to segments of DNA.
d. Under normal circumstances, each chromosome contains precisely one gene.
e. Many genes contain the information needed for cells to synthesize enzymes and other proteins.
You are working in the lab and have measured the size of mRNA that has been transcribed from a particular gene in your cell population.
The length of the gene in the cells you are working, measured from the start to the stop sequence is 9000 nucleotides. When you measure
the RNA, however, the size is only 3000 nucleotides. What do you think happened?
O a. Three DNA base pairs code for one RNA nucleotide.
b. mRNA does not contain exons.
c. There must have been a deletion mutation in the DNA in these cells.
Od. The poly-A tail is present in the DNA but not on the mRNA.
Oe. RNA splicing occurred, so introns are removed in the mRNA.
Chapter 8 Solutions
Microbiology: An Introduction
Ch. 8 - Briefly describe the components of DNA, and...Ch. 8 - DRAW IT Identify and mark each of the following on...Ch. 8 - Match the following examples of mutagens. Column A...Ch. 8 - The following is a code for a strand of DNA. a....Ch. 8 - Identify when (before transcription, after...Ch. 8 - Which sequence is the best target for damage by UV...Ch. 8 - You are provided with cultures with the following...Ch. 8 - Why are mutation and recombination important in...Ch. 8 - NAME IT Normally a commensal in the human...Ch. 8 - Match the following terms to the definitions in...
Ch. 8 - Match the following terms to the definitions in...Ch. 8 - Feedback inhibition differs from repression...Ch. 8 - Bacteria can acquire antibiotic resistance by all...Ch. 8 - Suppose you inoculate three flasks of minimal...Ch. 8 - Plasmids differ from transposons in that plasmids...Ch. 8 - Mechanism by which the presence of glucose...Ch. 8 - The mechanism by which lactose controls the lac...Ch. 8 - Two offspring cells are most likely to inherit...Ch. 8 - Which of the following is not a method of...Ch. 8 - Nucleoside analogs and ionizing radiation are used...Ch. 8 - Replication of the E. coli chromosome takes 40 to...Ch. 8 - Pseudomonas has a plasmid containing the mer...Ch. 8 - Ciprofloxacin, erythromycin, and acyclovir are...Ch. 8 - HIV, the virus that causes AIDS, was isolated from...Ch. 8 - Human herpesvirus-8 (HHV-8) is common in parts of...
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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
- Which of the following statements best describes the outcome of a mutation? a. A mutation always results in a mutant genotype b. A mutation always results in a mutant karyotype c. A mutation always results in a mutant phenotype d. A mutation always results in a mutant proteinarrow_forwardNonsense mutations occur when: A.The new codon causes an incorrect amino acid to code for an incorrect protein B.The loss or gain of 1 or 2 nucleotides that affects the coding for a protein. C.An alteration in sequence results in a new codon that causes the code to create an incomplete protein. D.Chromosomes break, causing a loss of DNA E.Genes in chromosome mutate and code for incorrect DNAarrow_forwardWhich statement about transposons is INCORRECT? a.A transposon is a small fragment of DNA that can move from one location in a chromosome to another location in the same chromosome. b.Transposon insertion into a gene causes a mutation that can be reversed by removal of the transposon. c.Transposon movement often occurs when the cell is under genomic stress. d.In nature, insertion of a transposon can be deliberately added into a harmful gene to enhance survival.arrow_forward
- What did the Hershey / Chase experiments (above) demonstrate about the molecules responsible for genetic inheritance patterns in the T2 bacteriophage? A. the genetic material consists of carbohydrates, not RNA B. the genetic material consists of protein, not lipids C. the genetic material consists of DNA, not polypeptides D. the genetic material consists of protein, not DNA E. the genetic material consists of lipids, not polypeptidesarrow_forwardDefine the following terms: a. A-DNA b. B-DNA c. pseudogene d. cruciform e. intronarrow_forwardHuman growth hormone is being researched as a potential anti-aging drug. What is the most likely way that would scientists produce large amounts of growth hormone? O a. Use transcription factors to increase the rate of transcription of the relevant gene in humans Use the human growth hormone to develop an aging vaccine Use restriction enzymes to isolate the relevant gene and allow it to replicate in all types of cells O b. O c. O d. Transfer the relevant gene to a bacterial cell and culture large colonies then purify the product Oarrow_forward
- The diagram below shows the result of a hybridization experiment between a eukaryotic mRNA and the template strand of its gene. Which of the following statements is TRUE? a. This gene contains four exons. b. The gene’s exons are visible as unpaired DNA loops protruding from the DNA/RNA hybrid. c. The 5’ end of the RNA strand is on the right side of the drawing. d. A hybrid between a prokaryotic mRNA and its gene would result in a similar image. e. the poly-A tail of the mRNA hybridizes with a poly-T stretch in the DNA.arrow_forwardWhich of the following order of events correctly depicts the Central Dogma as it would occur in an eukaryotic organism? a. DNA --> Protein --> mRNA b. DNA --> Pre-mRNA --> mRNA --> Protein c. mRNA --> DNA --> Protein d. Protein --> DNA --> Pre-mRNA --> mRNA e. DNA --> mRNA --> Proteinarrow_forwardA polyribosome is making several copies of the same protein molecule. a.True b. False Genes determine polypeptide structure, which determines the structure of enzymes and structural proteins, which determine the cell’s functions and structure. a. true b. falsearrow_forward
- Which of the following mutations would be the LEAST likely to have a harmful effect on an organism? A. insertion of three nucleotides near the middle of a gene B. a single nucleotide substitution that produces a codon that codes for the same amino acid C. a single nucleotide insertion near the end of the coding sequence D. a single nucleotide insertion close to the start of the coding sequencearrow_forwardThe genome of an organism contains 35% adenine. What percent of the bases are cytosine? A. 15% B. 20% C. 35% D. 40%arrow_forwardIf 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_forward
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