The enzyme that converts glucose into ethyl alcohol and carbon dioxide is

• zymase

• invertase

• maltase

• urease

The sugar moiety present in RNA molecule is

• β-D-2-deoxyribose

• β-D-galactose

• β-D-fructofuranose

• β-D-ribose

The carbohydrate used as storage molecule in animal is

• sucrose

• glycogen

• maltose

• glucose

Glucose on oxidation with bromine water yields gluconic acid. This reaction confirms the presence of

• six carbon atoms linked in straight chain

• secondary alcoholic group in glucose

• aldehyde group in glucose

• primary alcoholic group in glucose

Which of the following amino acid is basic in nature?

• Valine

• Leucine

• Tyrosine

• Arginine

How many amino acids are present in insulin?

• 25

• 51

• 20

• 22

The repeating unit present in nylon-6 is

• -[NH(CH₂)₆NHCO(CH₂)₄CO]-

• -[CO(CH₂)₅NH]- or -[CO(CH₂)₆NH]-

• -[CO(CH₂)₄NH]-

• -[NH(CH₂)₄NHCO(CH₂)₆CO]-

Which one of the following is not correct?

• D-(-)-fructose exists in furanose structure

• D-( + )-glucose exists in pyranose structure

• In sucrose the two monosaccharides are held together by peptide linkage

• Maltose ia a reducing sugar

How many times oxyhaemoglobin is less stable than carboxyhaemoglobin?

• 50

• 200

• 500

• 300

What is the combining ratio of glycerol and fatty acid when they combine to form triglyceride?

• 3:4

• 3:2

• 1:2

• 1:3