Starch agar and CRYEMA - Table 1

Starch agar and CRYEMA - Table 1

Assessment

Assessment

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Glynis glynisalmeida2@gmail.com

Biology

University

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15 questions

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1.

Multiple Choice

30 sec

1 pt

How is the presence of amylase determined?

By addition of iodine

By addition of litmus solution

By addition of methyl orange

By addition of phenolphthalein

2.

Multiple Choice

30 sec

1 pt

Which dye is included in the culture media for testing rhizobium species?

Phenol red

Congo red

Phenolphtalein

Methyl red

3.

Multiple Choice

30 sec

1 pt

What kind of a media is CRYEMA?

General purpose

Selective

Differential

Enriched

4.

Multiple Choice

30 sec

1 pt

What happens to starch agar when the appropriate organisms are grown upon it?

The colonies produce fluorescent pigment

Starch in the agar is hydrolysed to glucose by the amylase produced

The organisms from the colonies become motile

The colonies show abnormal colony characteristics

5.

Multiple Choice

30 sec

1 pt

What happens when iodine is added to the starch agar on which amylase producers have been cultivated?

The agar plate becomes airborne and becomes free of earth's gravitational field

The amylase production increases tremendously

The colonies burn with a purple flame

The area around the colonies show a zone of clearance that remains white or turns slightly brown, while rest of the plate turns a dark blue color.

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