mid ch3 Flashcards

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1
Q

attached at one or both ends of the cell

A

flagella

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2
Q
  • single flagellum
A

Monotrichous

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3
Q
  • small bunches or tufts of
    flagella emerging from the same site
A

Lophotrichous

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4
Q

dispersed randomly over the structure of the cell

A

Peritrichous

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5
Q

Axial Filaments Found in

A

Spirochetes

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6
Q

Found on gram- negative bacteria

A

pili

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7
Q

Used for attachment
and genetic exchange

A

pili

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8
Q

Used for attachment and sometimes motility

A

Fimbriae

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9
Q

Tend to stick to each other and to surfaces

A

Fimbriae

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10
Q
  • a loose shield that protects some bacteria from
    loss of water and nutrients
A

Slime layer

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11
Q
  • when the glycocalyx is bound more tightly to the
    cell and is denser and thicker
A

Capsule

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12
Q
  • important for pathogenesis,prevent phagocytosis
A

Capsule

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13
Q

Target of many antibiotics-

A

disrupt the cell wall, and cells have little protection from lysis

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14
Q

Some don’t have a cell wall at all For example,

A

Mycobacterium

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15
Q
  • lack cell wall entirely
A

Mycoplasmas

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16
Q

Important medical species of Mycoplasma

A

pneumonia

17
Q

Mycobacteria Contain

A

mycolic acid (a wax)

18
Q

Cell envelope can interact with human tissues
and cause disease

A

Corynebacterium diphtheriae
Streptococcus pyogenes

19
Q

Characterized by S
units- the prokaryotic
ribosome is

A

70S

20
Q
  • when cells of a single species
    vary to some extent in shape and size
A

Pleomorphism

21
Q

Polyphosphate granules of Corynebacterium
and Mycobacterium are called

A

metachromatic granules