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Microbiology > Bacterial genetics > Flashcards

Bacterial genetics Flashcards

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Biology 101 flashcards
1
Q

Examples of mutagens

A

Nitrous oxide
Acridine dyes

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2
Q

MOA of nitrous oxide

A

Alters adenine to pair with cytosine instead of thymine

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3
Q

Types of plasmids

A

R factor
Col factor
RTF factor
F factor

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4
Q

Significance of plasmids

A
  1. Code for resistance to antibiotics
  2. Code for the production of bacteriocines
  3. Code for the production of toxins
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5
Q

Which bacteria species produce enterotoxins

A

Escherichia coli
Vibrio cholerae

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6
Q

Which bacteria species produce exfoliative toxins

A

Staphylococcus aureus

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7
Q

Which bacteria specie produces neurotoxins

A

Clostridium tetani

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8
Q

Bacteria that possess transfer factor are called

A

F+ (male,donor)

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9
Q

F factor plasmid is transferred to other cells through

A

conjugation

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10
Q

R factor plasmids are usually transferred to related species along with

A

RTF

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11
Q

Transposable genetic elements are

A

Jumping genes

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12
Q

Types of transposable genetic elements

A

Insertion sequences
Transposons

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13
Q

The introduction of an insertion sequence into a bacterial gene will result in

A

inactivation of the gene

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14
Q

Many antibiotic resistance genes are located on

A

Transposons

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15
Q

Bacterial genes are transferred by

A

Parent to offspring
Conjugation
Transduction
Transformation

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16
Q

The transfer of DNA from a living donor bacterium to a recipient bacterium is

A

Conjugation

17
Q

The first step in conjugation is

A

Mating pair formation

18
Q

The main structure that allows mating pair formation is

A

Sex pilus

19
Q

Gram-positive donor bacteria produce what molecules rather than sex pili in mating pair formation

A

Adhesins
Sticky surface molecules

20
Q

R factor has two components

A

RTF (codes for self transfer)
R determinant (codes for antibiotic resistance)

21
Q

fjgh

A

Microbiology (6 decks)

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