Lec5 Flashcards

1
Q

is the organization of organisms into progressively more inclusive groups on the basis of either phenotypic similarity or evolutionary relationship.

A

Classification

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2
Q

is the actual naming of organisms and follows the binomial system of nomenclature devised by Carl Linnaeus and used throughout biology

A

Nomenclature

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3
Q
  • fungus like characteristics
  • Have filamentous growth
  • The cell wall and the internal structures are typical of bacteria rather than fungi
A

Actinomycetes

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4
Q
  • elongated motile, flexible bacteria
  • helical shape
  • tightly coiled like a telephone cord, other more open
  • spirochetes contain – endoflegalla
A

Spirochaetes

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5
Q
  • smallest free living organism in nature
  • Lack cell wall (do not stain or hardly)
  • Pleomorphic and of indefine shape
A

Mycoplasmas

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6
Q
  • Very small
  • Obligate parasites
  • Once tought to be viruses
A

Rickettsiae and Chlamydiae

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7
Q

Acid fat stain used for?

A

Mycobacterium tuberculosis - Mycobacterium leprae

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8
Q

An organism that requires organic carbon as its carbon source.

A

Heterotroph

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9
Q

An organism able to grow with CO2 as its sole source of carbon.

A

Autotroph

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10
Q

Bacteria which depend on sunlight as a major source of energy

A

Photoautotrophe

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11
Q

Bacteria whch use chemical as source of energy

A

Chemoautotrophe

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12
Q

Use reduced inorganic substances as their electron source

A

Lithotrophs

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13
Q

Exstract electrons from organic compounds

A

Organotrophs

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14
Q

Example of Psychrophiles (15 – 20°C)?

A

Psedomonas fluorescens

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15
Q

Example of Mesophiles (20 40°C) ?

A

E. coli, Salmonelle enterica, Staphylococcus aureus

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16
Q

Example of Thermophiles (50 – 60°C)?

A

Bacillus

17
Q

Example of Obligate anaerobe?

A

(Clostridium spp.)

18
Q

Example of Facultative anaerobe?

A

(E. coli)

19
Q

Majority of the medically important bacteria grow best at which range of pH?

A

neutral or slightly alkaline reaction (pH 7.2 – 7.6).

20
Q
  • Gram negative
  • non-sporulating
  • short Rod
  • facultative anaerobes
A

Family Enterobacteriaceae

21
Q
  1. used for the isolation of gram-negative
    enteric bacteria.
  2. It is used in the differentiation of lactose fermenting from
    lactose non-fermenting gram- negative bacteria.
  3. used for the isolation of coliforms and intestinal
    pathogens in water, dairy products and biological specimens
    Which type of agar?
A

MacConkey Agar

22
Q

can tolerate a reduction in Aw, but prefer to grow in an environment where Na has not been added.

A

Halotolerates

23
Q

Classification based on anatomical features (Flagella)?

A

 Monotrichous
 Lophotrichous
 Amphitrichous
 Petritrichous

24
Q

Example of Spore forming bacteria ?

A

(Bacillus spp.)

25
Q
  • non Sporing bacteria
  • Facultative anaerobe
  • Pigment non producer
  • Gram negative rods
  • Fermentative
  • Non fastidious
  • Mesophiles
    Give an example of this?
A

E.coli

26
Q

Example of Gram positive cocci?

A

(Staphylococcus aureus)

27
Q

Example of Gram negative cocci?

A

(Neisseria gonorrhoeae)

28
Q

Example of Gram positive rods?

A

(Clostridium spp.)

29
Q

Example of Gram negative rods?

A

(E. coli)