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First Aid Microbiology > Microbiology - Basic Bacteriology (Bacterial Structures) > Flashcards

Microbiology - Basic Bacteriology (Bacterial Structures) Flashcards

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Biology 101 flashcards
1
Q

What gives rigid support, protects against osmotic pressure?

A

Pepetidoglycan

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2
Q

What is the chemical composition of peptidoglycan?

A

Sugar backbone with peptide side chains cross-linked by transpeptidase

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3
Q

In gram positive what serves as major surface antigen?

A

Cell wall / cell membrane

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4
Q

In gram positive what induces TNF and IL-1?

A

Lipoteichoic acid

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5
Q

What structure is unique to gram positive?

A

Lipoteichoic acid

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6
Q

What is Lipoteichoic acid made of?

A

Combination of lipids and teichoic acids

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7
Q

What is unique to gram-negative organisms?

A

Endotoxin/LPS (outer membrane)

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8
Q

Which structure serve as site of endotoxin (LPS) as major surface antigen for gram negatives?

A

Outer membrane

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9
Q

What particular component of outer membrane (LPS) in gram negative induces TNF and IL-1?

A

Lipid A

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10
Q

In gram positive, what induces TNF and IL-1?

A

Lipoteichoic acid

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11
Q

What serves as the antigen in gram negative?

A

O polysaccharide

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12
Q

What serves as a site of oxidative and transport enzyme?

A

plasma membrane

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13
Q

What is the name of the space between cytoplasmic membrane and outer membrane in gram-negative bacteria?

A

Periplasm

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14
Q

What is the function of periplasm?

A

Containes hydrolytic enzymes including beta lactamase

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15
Q

Which structure mediates adherence of bacteria to cell surface?

A

Pilus/fimbria

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16
Q

what is pilus/fimbria made of?

A

glycoprotein

17
Q

Flagellum provides ( ) and is made of ( ).

A
  1. motility

2. protein

18
Q

which structure is resistant to dehydration, heat, and chemicals?

A

spore

19
Q

what is spore made of?

A
  1. keratin-like coat
  2. dipicoloinic acid
  3. peptidogylcan
20
Q

which structure serves to contain a variety of genes for antibioitc resistance, enzymes, and toxins?

A

plasmid

21
Q

which structure mediates adherence to surfaces, especially foreign surfaces such as indwelling catheters?

A

Glycocalyx

22
Q

what is glycocalyx made of?

A

polysaccharide

First Aid Microbiology (15 decks)

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