Microbiology: Chapter 9
- 1.What is the correct direction from which information flows?
- A.
RNA>Proteins>DNA
- B.
DNA>Proteins>RNA
- C.
DNA>RNA>Proteins
- D.
RNA>DNA>Proteins
- 2.Match the word to its definition: Replication
- A.
DNA copies itself before cell division
- B.
DNA makes a mRNA copy of itself during
- C.
Messenger RNA directs the synthesis of a protein
- 3.Match the word to its definition: Transcription
- A.
DNA copies itself before cell division
- B.
DNA makes a mRNA copy of itself during
- C.
Messenger RNA directs the synthesis of a protein
- 4.Match the word to its definition: Translation
- A.
Messenger RNA directs the synthesis of a protein
- B.
DNA makes a mRNA copy of itself during
- C.
Messenger RNA directs the synthesis of a protein
- 5.Can bacteria have sexual relations or sexual iife cycles?
- A.
Yes
- B.
No
- C.
Only sexual life cycles
- 6.The transfer of bacterial genes from one cell to another mediated by a bacteriophage (a virus that infects bacteria).
- A.
Transduction
- B.
Conjugation
- C.
Transformation
- 7.The uptake of naked DNA by a cell.
- A.
Transduction
- B.
Conjugation
- C.
Transformation
- 8.The transfer of genetic material from one bacterial cell (the donor) to another (the recipient) by direct contact.
- A.
Transduction
- B.
Conjugation
- C.
Transformation
- 9.Transformation was discovered by Griffeth in an experiment that eventually led to the idea that DNA is the genetic material.
- A.
True
- B.
False
- 10.Griffiths experiment involved bacteria and mice, with what bacteria?
- A.
Streptococcus pneumoniae
- B.
Stapholococcus pneumoniae
- C.
Bacillicoccus pneumoniae
- 11.The smooth strains of bacteria produced a/an __________ in the mice, and rough strains did not. We know this because of the ______.
- A.
Increase in health, capsule
- B.
Increase in illness, capsule
- C.
Decrease in energy, virus
- 12.A mix with living rough strain of bacteria with dead smooth strain bacteria, injected into the mouse equals which of these?
- A.
No Problem
- B.
Minor health problems
- C.
Death
- 13.Was Griffith right when he reasoned that something from the dead smooth cells of the bacteria was able to transform the rough cells into smooth cells?
- A.
Yes
- B.
No
- C.
No, they did not transform, transduction took place
- 14.What plasmid was found when conjugation was initially discovered?
- A.
D Factor
- B.
F Factor
- C.
E Factor
- D.
A Factor
- 15.During conjugation a plasmid ______, and directs the formation of the pilus, from this the _____moves to a recipient cell
- A.
Copies itself, copy of it
- B.
Reaches, piece of it
- C.
Moves, metabolite
- 16.Cells containing the F factor are referred to as what?
- A.
F
- B.
F+
- C.
F-
- 17.The cell containing the F factor can change cells that are?
- A.
F-
- B.
F+
- C.
F
- 18.If the F factor becomes integrated into the bacterial chromosome, we call that an Hfr strain because when it conjugates it causes a...
- A.
Low frequency of recombination of bacterial genes
- B.
Slight frequency of recombination of bacterial genes
- C.
High frequency of recombination of bacterial genes
- 19.When a virus infects a bacterial cell, it does what?
- A.
Replicates its own DNA and the bacteria remains healthy
- B.
Replicates itself and destroys bacteria
- C.
Replicates its own DNA and degrades the bacterial DNA
- 20.Generalized transduction is
- A.
Any bacteriophage can be involved and any genes may be transferred
- B.
Only temperate phages may be involved and only the genes adjacent to their integration sites may be transferred.
- 21.Specialized transduction is
- A.
Any bacteriophage can be involved and any genes may be transferred
- B.
Only temperate phages may be involved and only the genes adjacent to their integration sites may be transferred.
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