Mer Scott
Quiz por , criado 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.

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Mer Scott
Criado por Mer Scott quase 7 anos atrás
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L35 Microbial genetics – microbes and medicine

Questão 1 de 8

1

Which statement best describes a plasmid?

Selecione uma das seguintes:

  • 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.

Explicação

Questão 2 de 8

1

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

Selecione uma das seguintes:

  • Vertical gene transfer

  • Horizontal gene transfer

Explicação

Questão 3 de 8

1

Selecione das listas do Menu para completar o texto.

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

Explicação

Questão 4 de 8

1

Which classic experiment demonstrates horizontal gene transfer?

Selecione uma das seguintes:

  • Griffith's experiment

  • Koch's postulates

  • Avery's experiment

Explicação

Questão 5 de 8

1

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

Selecione uma das seguintes:

  • Transduction

  • Transformation

  • Conduction

Explicação

Questão 6 de 8

1

Which statement describes transduction?

Selecione uma das seguintes:

  • 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

Explicação

Questão 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.

Selecione uma das opções:

  • VERDADEIRO
  • FALSO

Explicação

Questão 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.

Arraste e solte para completar o texto.

    bacterial
    viral
    cytosol
    bacterial DNA
    lysogenic
    lytic
    incorporated

Explicação