Biological Molecules: Biochemical Tests (DR.A)

Question 1

What is the BENEDICT’S REAGENT?

Answer 1

BLUE SOLTUION which is used to TEST for REDUCING SUGARS and NON-REDUCING SUGARS

Question 2

What is the BIURETS TEST?

Answer 2

A simple BIOCHEMICAL REACTION to detect the presence of A PROTEIN, if the BIURET’S SOLUTION turn PURPLE then a PROTEIN IS PRESENT

Question 3

What is an EMULSION TEST?

Answer 3

A test for LIPIDS
You mix your SAMPLE WITH ETHANOL and then ADD WATER, if a CLOUDY EMULSION FORMS then a LIPID IS PRESENT

Question 4

What is the NON-REDUCING SUGAR TEST?

Answer 4

-Following a NEGATIVE R-S TEST
-Heat solution with HCL to HYDROLYSE the NON-RS into it’s MONOSACCHARIDES
-Then perform BENEDICT’S TEST again
-If POSITIVE after HYDROLYSIS, NON-RS is PRESENT