Mer Scott
Quiz von , erstellt am more than 1 year ago

• Outline the properties of the bacterial genome. • Outline the difference between vertical and horizontal gene transfer. • Outline the four strategies used by bacteria to generate genetic diversity (mutation, transformation, transduction and conjugation). • Describe how microorganisms exchange genes to alter their virulence. • Outline the lytic and lysogenic cycles of bacteriophage replication.

18
1
0
Mer Scott
Erstellt von Mer Scott vor mehr als 7 Jahre
Schließen

L35 Microbial genetics – microbes and medicine

Frage 1 von 8

1

Which statement best describes a plasmid?

Wähle eine der folgenden:

  • A circular, self replicating piece of gene in the cytosol of viruses.

  • A small, circular, self replicating DNA segment in the cytosol of bacteria.

  • A small, circular, complex protein structure found in the plasma of bacteria.

Erklärung

Frage 2 von 8

1

A bacteria undergoes binary fission to create two genetically identical bacteria. Which method of gene transfer is this?

Wähle eine der folgenden:

  • Vertical gene transfer

  • Horizontal gene transfer

Erklärung

Frage 3 von 8

1

Wähle von der Dropdown-Liste, um den Text zu vervollständigen.

In ( horizontal, vertical ) gene transfer, one trait is passed to another bacteria. In ( vertical, horizontal ) gene transfer, the whole genome is passed on.

Erklärung

Frage 4 von 8

1

Which classic experiment demonstrates horizontal gene transfer?

Wähle eine der folgenden:

  • Griffith's experiment

  • Koch's postulates

  • Avery's experiment

Erklärung

Frage 5 von 8

1

Which type of horizontal gene transfer involves a pilus used to make cell-to-cell contact?

Wähle eine der folgenden:

  • Transduction

  • Transformation

  • Conduction

Erklärung

Frage 6 von 8

1

Which statement describes transduction?

Wähle eine der folgenden:

  • Transfer of DNA from one bacteria to another via a bacteriophage

  • The uptake of naked short fragments of DNA by naturally transformable bacteria

  • Transfer of DNA via a pilus using cell to cell contact

Erklärung

Frage 7 von 8

1

The uptake of naked short fragments of DNA by naturally transformable bacteria is a form of horizontal gene transfer called transduction.

Wähle eins der folgenden:

  • WAHR
  • FALSCH

Erklärung

Frage 8 von 8

1

In the lytic cycle, the virus uses the cellular machinery to assemble more bacteriophages. When the capsid is assembled, the intention is for it to contain it's own DNA. However, plastids from the containing can be incorporated into the bacteriophage too.
If this bacteriophage goes on to infect a different bacteria in a cycle, the bacterial DNA from the first bacteria will be transferred to the second and into its DNA.

Klicke und ziehe, um den Text zu vervollständigen.

    bacterial
    viral
    cytosol
    bacterial DNA
    lysogenic
    lytic
    incorporated

Erklärung