Quiz2

Which tube gives positive result

• Milk+ rennin(0°)+ incubation a t37°

• Milk+ rennin(100°)+ incubation a t37°

• Milk+ rennin(0°)

• Milk+ rennin(100°)

Which tube is positive

• Glycine + ninhyden

• Glycogen + ninhyden

• Glycine + ninhyden+Heat

• Glycogen + ninhyden+ heat

We use suden red test for

• Protein

• Fats

• Nucleic acid

• Reducing sugar

The color of Biuret test before boiling is pinkish

• True

• False

The dische diphenylamin test, green blue color indecates presence of

• DNA

• RNA

• Polypeptide

• Starch

The positive reaction is

• Lugols+ glucose

• Lugols+sucrose

• Lugols +starch

• Lugols+ water

The substrate of the rennin enzyme is

• Catechol

• Casein

• Benzoquinone

• PTU

Catechol is dark brown chemical

• True

• False

PTU is non competitive inhibitor

• True

• False

The cofactor for catechol oxidase is

• Cu

• Ca

• C

• Fe