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Microbiology Exam III > Some Gen Micro > Flashcards

Some Gen Micro Flashcards

1
Q

coccus

A

spherical

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2
Q

bacillus

A

rod shaped

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3
Q

coccobacillus

A

rod-shaped with round ends, mistaken for coccus

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4
Q

spirochete

A

spiral shaped cell with unique motility

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5
Q

pleomorphic

A

vary in shape and lack a single characterstic form

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6
Q

cell wall with high lipid content, do not readily take up stain

A

acid fast

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7
Q

require unique dyes and heat to stain

A

acid fast

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8
Q

mycobacterium- genus in which all species are _______ _____

A

acid fast

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9
Q

cell membranes have high sterol content= rigidity of cell

A

cells that lack cell wall

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10
Q

T/F: mycoplasms that lack a cell wall are not susceptible to antibiotics that inhibit cell wall synthesis, like penicillin

A

True

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11
Q

Passive transport rarely used in bacteria

A

facilitated diffusion

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12
Q

various transport proteins used to move substances across membrane, requires energy

A

active transport

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13
Q

What is the site of oxidative phosphorylation of bacteria?

A

cell membrane

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14
Q

What is the location of enzymes used in DNA replication?

A

cell membrane

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15
Q

invaginations of the cytoplasmic membrane that can form into vesicles, possible role in cell division

A

mesosome

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16
Q

the space betwen the inner and outer membranes in G- cells

A

periplasmic space,
G-: store degradative enzymes in the periplasmic space
G+: lack periplasmic space, instead secrete exoenzymes and perform extracellular digestion

17
Q

region of bacterial cell containing DNA, generally circular

A

nucleoid

18
Q

small extrachromosomal DNA, autonomous replication

A

plasmid

19
Q

organelles composed of ribosomal DNA and protein

A

ribosomes

20
Q

accumulation of high molecular weight polymers, also called inclusion bodies, granular includes, typically contain glycogen

A

storage granules

21
Q

characteristics of this external structure include:

  • motility
  • can act as a virulence factor
A

flagella

22
Q

characteristics of this external structure include:

  • serve as adherence factors
  • sex __ transfer plasmids during conjugation
  • can act as a virulence factor
A

pili, aka fimbriae

23
Q

characteristics of this external structure include:

  • glyocalyx
  • protective walls around soem G+ and G-
  • virulence factor- impedes phagocytosis
A

capsule (slime layer)

24
Q

characteristics of this external structure include:

  • 2 G+ genera, Bacillus, Clostridium
  • protective, not reproductive
  • resist heat, drying, disinfectants
A

endospore

Microbiology Exam III (10 decks)

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