Mer Scott
Test por , creado hace más de 1 año

• 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.

19
1
0
Mer Scott
Creado por Mer Scott hace más de 7 años
Cerrar

L35 Microbial genetics – microbes and medicine

Pregunta 1 de 8

1

Which statement best describes a plasmid?

Selecciona una de las siguientes respuestas posibles:

  • 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.

Explicación

Pregunta 2 de 8

1

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

Selecciona una de las siguientes respuestas posibles:

  • Vertical gene transfer

  • Horizontal gene transfer

Explicación

Pregunta 3 de 8

1

Selecciona la opción correcta de los menús desplegables para completar el texto.

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

Explicación

Pregunta 4 de 8

1

Which classic experiment demonstrates horizontal gene transfer?

Selecciona una de las siguientes respuestas posibles:

  • Griffith's experiment

  • Koch's postulates

  • Avery's experiment

Explicación

Pregunta 5 de 8

1

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

Selecciona una de las siguientes respuestas posibles:

  • Transduction

  • Transformation

  • Conduction

Explicación

Pregunta 6 de 8

1

Which statement describes transduction?

Selecciona una de las siguientes respuestas posibles:

  • 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

Explicación

Pregunta 7 de 8

1

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

Selecciona uno de los siguientes:

  • VERDADERO
  • FALSO

Explicación

Pregunta 8 de 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.

Arrastra y suelta para completar el texto.

    bacterial
    viral
    cytosol
    bacterial DNA
    lysogenic
    lytic
    incorporated

Explicación

Anterior
Siguiente