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Culture and its Techniques

Total questions: 15

Worksheet time: 8mins

Name
Class
Date
1.

Organisms belonging to one species

a)

Pure culture

b)

Mixed culture

2.

Axenic

a)

Pure culture

b)

Mixed culture

3.

organisms belonging to different species

a)

Pure culture

b)

Mixed culture

4.

Pinpoint Colonies

a)

Streptococcus pyogenes

b)

Staphylococcus aureus

5.

Pinhead Colonies

a)

Streptococcus pyogenes

b)

Staphylococcus aureus

6.

COLONY SHAPE: Medusa-face colonies or Lion's face colony

a)

Bacillus anthracis

b)

Proteus spp.

c)

Diptheroid

d)

Yeast

7.

COLONY SHAPE: Swarming colonies (hazy blanket; extends beyond streak lines)

a)

Bacillus anthracis

b)

Proteus spp.

c)

Diptheroid

d)

Yeast

8.

COLONY SHAPE: Rough edges

a)

Pseudomonas aeruginosa

b)

Proteus spp.

c)

Diptheroid

d)

Yeast

9.

COLONY SHAPE: Stars or colonies with feet or pedicles

a)

Pseudomonas aeruginosa

b)

Actinomyces

c)

Diptheroid

d)

Yeast

10.

COLONY SHAPE: Serrated

a)

Pseudomonas aeruginosa

b)

Actinomyces

c)

Diptheroid

d)

Yeast

11.

COLONY SHAPE: Molar tooth colonies

a)

Pseudomonas aeruginosa

b)

Actinomyces

c)

Diptheroid

d)

Yeast

12.

CONSISTENCY & TEXTURE: Brittle (splinters)/crumbly/wrinkled

a)

Nococardia spp.

b)

Staphylococcus aureus

c)

Neisseria, Klebsiella

d)

Diphtheoids

13.

CONSISTENCY & TEXTURE: Creamy butyrous

a)

Nococardia spp.

b)

Staphylococcus aureus

c)

Neisseria, Klebsiella

d)

Diphtheoids

14.

CONSISTENCY & TEXTURE: Sticky

a)

Nococardia spp.

b)

Staphylococcus aureus

c)

Neisseria, Klebsiella

d)

Diphtheoids

15.

CONSISTENCY & TEXTURE: Dry or Waxy

a)

Nococardia spp.

b)

Staphylococcus aureus

c)

Neisseria, Klebsiella

d)

Diphtheoids