Microbiology: Principles and Explorations
9th Edition
ISBN: 9781118743164
Author: Jacquelyn G. Black, Laura J. Black
Publisher: WILEY
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Textbook Question
Chapter 7, Problem 8SQ
Which of the following statements does not describe a valid difference between prokaryotic and eukaryotic molecular biology?
- a. Prokaryotic chromosomes are typically circular whereas eukaryotic chromosomes are typically linear.
- b. Prokaryotes typically have one copy of each gene whereas eukaryotes typically have two copies of each gene.
- c. Transcription and translation occur in the cytoplasm in prokaryotes but not in eukaryotes.
- d. Polyribosomers are used by prokaryotes but not by eukaryotes,
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Students have asked these similar questions
Which of the following schemes for molecular information flow never occurs in cellular life forms?
a. DNA to rRNA
b. mRNA to protein
c. DNA to tRNA
d. DNA to mRNA
e. RNA to DNA
Which of the following statements about codons in prokaryotic cells and eukaryotic cells is correct?
A.
Prokaryotic codons are longer than eukaryotic codons.
B.
Eukaryotic codons are made of DNA, and prokaryotic codons are made of RNA.
C.
Prokaryotes do not have mRNA, so there are no codons.
D.
Codons are very similar, no matter whether the cell is prokaryotic or eukaryotic.
Which of the following is evidence that eukaryotes and prokaryotes share a common ancestor?
a.All eukaryotes and prokaryotes use organic molecules as an energy source.
b.All eukaryotes and prokaryotes are capable of mitosis.
c.All eukaryotes and prokaryotes contain ribosomes.
d.All eukaryotes and prokaryotes contain linear DNA.
Chapter 7 Solutions
Microbiology: Principles and Explorations
Ch. 7 - Compare and contrast chromosomes in prokaryotes...Ch. 7 - DNA is not always the gemetic material. What are...Ch. 7 - How could mutations give rise to new alleles of a...Ch. 7 - How does trandlation differ from transcription?Ch. 7 - Distinguish between leading and lagging strands.Ch. 7 - What do 5 and 3 refer to? How do they determine...Ch. 7 - Contrast the three kinds of RNA. Does DNA make all...Ch. 7 - What feeds back in feedback inhibition? What does...Ch. 7 - What is the inducer for the lac operon?Ch. 7 - Compare enzyme induction and enzyme repression.
Ch. 7 - If you had be exposed to a mutagen,would you...Ch. 7 - How can a change in geneotype fail to produce a...Ch. 7 - Why are nitrates and nitrites, which have been...Ch. 7 - Cathy develops a painful cluster of blister-like...Ch. 7 - Prokaryotes usually have just one chromosome and...Ch. 7 - During the early stages of development of the...Ch. 7 - Suppose you are a medical technician working in a...Ch. 7 - Match the following terms with their descriptions:Ch. 7 - Prob. 2SQCh. 7 - Prob. 3SQCh. 7 - Match the following terms with their respective...Ch. 7 - From the DNA template sequence 3-ATGCAGTAG-5, what...Ch. 7 - What type of RNA carries and transfers amino acids...Ch. 7 - What type of RNA carries the genetic information...Ch. 7 - Which of the following statements does not...Ch. 7 - Prob. 9SQCh. 7 - For the lac operon, match the following:Ch. 7 - Prob. 11SQCh. 7 - A frameshift mutation occurs following the: (a)...Ch. 7 - Prob. 13SQCh. 7 - Which of the following schemes for molecular...Ch. 7 - Suppose a point mutation occurred in the third...Ch. 7 - Prob. 16SQCh. 7 - (a) Why are bacteria useful in the study of...Ch. 7 - DNA damage in the form of dimers induced by UV...Ch. 7 - Prob. 19SQCh. 7 - Name and describe the effects of the following...
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- Which of the following statements is a lie? Select one: a. In humans, the genetic code is stored in 46 double-stranded DNA molecules. b. DNA packaging of prokaryotes into compact sizes is distinct to eukaryotic DNA packaging. c. Plasmids cause bacterial mutation and diversification thus they are essential components for cellular reproduction.arrow_forwardWhat are the most highly-conserved regions of human DNA (when compared to similar DNA sequences in closely-related animals)? A. transposons B. non-transcribed spacers C. introns D. pseudogenes E. exonsarrow_forwardWhich of the following experimental results was NOT evidence that DNA is the genetic molecule rather than proteins? a. When a virus was radioactively labelled, and the virus was allowed to infect a bacteria cell, radioactive virus DNA was found inside the bacteria cell while radioactive virus proteins were found outside the cell. b. Dead pathogenic bacteria cells combined with living nonpathogenic bacteria cells caused the creation of living pathogenic cells and thus the death of the host animal. c. Proteins are a class of macromolecules with the diversity and specificity needed for hereditary material. d. Nucleotide bases occur regularly, such that the number of adenines = number of thymines, and the number of guanines = number of cytosines.arrow_forward
- Spirochetes are free-living, anaerobic bacteria that contain spiral-shaped cells. Nematodes are roundworms that are incredibly diverse and, as a group, have adapted to survive in all environments. Which of the following statements accurately describes the DNA of both groups? A. The spirochaete genome is smaller than the nematode genome. B. Nematode DNA is circular. C. Spirochete chromosomes are composed of just DNA while nematode chromosomes also include specialized proteins. D. Spirochete DNA is linear.arrow_forwardThe 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_forwardWhat is the central dogma of molecular biology? a. DNA is the genetic material. b. Information passes from DNA directly to protein. c. Information passes from DNA to RNA to protein. d. One gene encodes only one polypeptide.arrow_forward
- The existence of ubiquitous genes and proteins (performs the same function in all organisms) strongly support the theory that all life evolved from a common ancestor. With that in mind, what kind of genes might be evolutionarily conserved and universally found in bacteria, plants and animals? Select one: a. genes that code for the synthesis of ribosomes. b. genes that code for the enzymes of glucose metabolism c. genes that code for the synthesis DNA and RNA polymerase d. all of the above. Clear my choicearrow_forwardSpirochaetes are free-living, anaerobic bacteria that contain spiral-shaped cells. Nematodes are roundworms that are incredibly diverse and, as a group, have adapted to survive in all environments. Which of the following statements accurately describes the DNA of both groups? A. The spirochaete genome is smaller than the nematode genome. B. Nematode DNA is circular. C. Spirochaete chromosomes are composed of just DNA while nematode chromosomes also include specialized proteins. D. Spirochaete DNA is linear.arrow_forwardWhich of the following is not true with respect to DNA? a. A nucleic acid that contains the genetic instructions used in the development and functioning of all modern living organisms. b. The helix geometry of DNA is of B-Form. DNA is completely protected by the body, i.e., the body destroys enzymes that cleave DNA. DNA can be damaged by exposure to Ultra-violet rays. c. The pairing of bases: A-T (Adenine-Thymine), G-C (Guanine-Cytosine) d. Consists of a deoxyribose sugar, a phosphate backbone, four bases: adenine, guanine, cytosine and uracil. e. None of the abovearrow_forward
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