Lab6B-3: Starch Hydrolysis Test

A positive result for this metabolic test results in: A) Clear/Yellow halo around bacterial growth B) Blue halo around bacteria C) No growth D) No-halo around bacterial growth

A

In the image below, what is the outcome of the test? A) Amylase/oligoglucosidase negative B) starch positive C) starch negative D) Amylase/oligoglucosidase positive

A

What is the outcome of the test below? A) Starch negative B) Amylase/oligoglucosidase positive C) Amylase/oligoglucosidase negative D) Starch positive

B

Match the following outcome of the test to the final color of the media.

Blue/black near bacterial growth: amylase/oligoglucosidase negative Yellow near bacterial growth: amylase/oligoglucosidase positive

A negative result in this test appears as a: A) Yellow stained I2KI Halo B) Growth with a halo C) Growth with no halo

C

This metabolic test specifically examines for the presence of: A) starch B) fermentation C) Amylase/oligoglucosidase D) glucose

C

What is the defining reagent in this media that is critical for determining the outcome (not the indicator)? A) Oligoglucosidaswe B) Amylase C) Starch D) Gluose

C

How is this metabolic test innoculated? A) S-shaped plate streak B) Spread plate C) Quadrant method D) Single line plate streak

D

What is the indicator used in this metabolic test? A) Starch B) Bromothymol blue C) Phenol red D) I2KI

D

Match the indicator's color change to the environmental condition in this test.

Yellow: starch absent Blue/Black: starch present