Biochemistry

Based on which of the following enzymes Hydrolysis reactions are catalyzed?

• Hydrolase

• Oxidoreductase

• Isomerase

• Ligase

Which of the following is an imino acid?

• Serine
  

• Alanine

• Glycine

• Proline

Which of the following is an example of epimers?

• Mannose & Glucose

• Glucose & Ribose

• Galactose & Mannose

• Glucose & Galactose

Which of the following is a choline-containing lipid?

• Phosphatidylethanolamine

• Phosphatidylserine

• Sphingomyelin

• Phosphatidylglycerol

The general mechanism is that an enzyme acts by

• 1. Reducing the activation energy

• 1. Increasing activation energy

• 1. Decreasing pH value

• 1. Increasing the pH value

Blocking of enzyme action by blocking its active site is called as:

• 1. Allosteric inhibition

• 1. Feedback inhibition

• 1. Competitive inhibition

• Non-competitive inhibition

Enzymes are polymers of:

• 1. Hexose sugar

• 1. Amino acids

• 1. Fatty acids

• 1. Inorganic phosphate

Which of the following polymer is stored in the liver of animals?

• Amylose

• Cellulose

• Amylopectin

• Glycogen

ucrose (cane sugar) is a disaccharide. One molecule of sucrose on hydrolysis gives

• 2 molecules of glucose

• 2 molecules of glucose + 1 molecule of fructose

• 1 molecule of glucose + 1 molecule of fructose

• 2 molecules of fructose

Proteins are found to have two different types of secondary structures viz. α-helix and β-pleated sheet structure. α-helix structure of protein is stabilised by:

• Peptide bonds

• ) van der Waals forces

• Hydrogen bonds

• Dipole-dipole interactions