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BIO 14 > ACTIVITY 2 > Flashcards

ACTIVITY 2 Flashcards

1
Q

What are the 3 things that prokaryotes have that are not membrane bound?

(based from worksheet)

A
  1. genetic material
  2. respiratory apparatus
  3. photosynthetic pigments
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2
Q

4 basic characteristics of prokaryotes

A
  1. unicellular
  2. no organelles
  3. microscopic
  4. no nucleus
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3
Q

5 factors in DIFFERENTIATING prokaryotes

A
  1. morphology
  2. chemical composition
  3. nutritional requirements
  4. biochemical activities
  5. energy source
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4
Q

Mode of reproduction by prokaryotes

A

binary fission

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5
Q

What bacteria are known as PRODUCERS?

A

cyanobacteria

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6
Q

2 ways prokaryotes can be described

A
  1. cultural (macroscopic)
  2. microscopic
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7
Q

2 types of preparation under CULTURAL CHARACTERISTICS

A

plate and slant

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8
Q

CHARACTERISTICS need to be determined for the ff:

  • Plate (4)
  • Slant (3)
A

PLATE:
- color
- form
- margin
- elevation

SLANT:
- color
- form
- margin

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9
Q

What kind of agar to use to see the natural color of microorganisms?

A

nutrient agar

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10
Q

2 factors that affect the cultural characteristics of microorganisms

A
  1. components of medium
  2. incubation condition
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11
Q

What is a COLONY

A
  • visible mass of microorganisms originated from a single cell
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12
Q

what macroscopic color are most microorganisms are?

and what shapes are typically gram + or gram - ?

A

non-chromogenic

gram - may appear cream, white, or gray (bacillus)

gram + may appear yellow (coccus)

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13
Q

FORM vs ELEVATION vs MARGIN

A

F: shape of colony
E: cross sectional shape of colony
M: shape of the edge of colony

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14
Q

FORMS on AGAR SLANT

uniform growth along line of inoculation

A

filiform

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15
Q

FORMS on AGAR SLANT

margins of growth have TOOTHED APPEARANCE

A

echinulate

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16
Q

FORMS on AGAR SLANT

separated colonies

17
Q

FORMS on AGAR SLANT

thin, veil-like growth, and spreading

18
Q

FORMS on AGAR SLANT

branched, tree-like growth

A

arborescent

19
Q

FORMS on AGAR SLANT

root-like appearance

20
Q

3 major shapes of bacteria

A

coccus
bacillus
spirillum

21
Q

CULTURAL PLATE

12 forms

22
Q

CULTURAL PLATE

8 elevations

23
Q

CULTURAL PLATE

9 margins

24
Q

MACROSCOPIC COLOR OF THE FOLLOWING:

  1. Micrococcus luteus
  2. Bacillus cereus
  3. Escherichia coli
  4. Serratia marcescens
A
  1. yellow
  2. white
  3. colorless
  4. red

BIO 14 (23 decks)

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