Which enzyme catalyzes the hydrolysis of lactose into glucose and galactose?
Lactase catalyzes the breakdown of lactose into glucose and galactose.
Ref: NCERT Class 11 Biology Chapter 9: Biomolecules Enzymes - Properties Classification and Cofactors
Enzymes - Properties Classification and Cofactors
Explore how enzymes function as biological catalysts, their classification based on structure and reaction type, and the importance of cofactors in enabling enzyme activity.
Filter questions
Which of the following is an essential cofactor for catalase?
Iron is a necessary cofactor for catalase, an enzyme that breaks down hydrogen peroxide.
Ref: NCERT Class 11 Biology Chapter 9: Biomolecules Enzymes - Properties Classification and Cofactors
Which enzyme is responsible for breaking peptide bonds in proteins?
Proteases (also called peptidases) break peptide bonds in proteins.
Ref: NCERT Class 11 Biology Chapter 9: Biomolecules Enzymes - Properties Classification and Cofactors
Which of the following statements about ATP is incorrect?
ATP is a nucleotide, not a protein, and does not act as an enzyme.
Ref: NCERT Class 11 Biology Chapter 9: Biomolecules Enzymes - Properties Classification and Cofactors
Which enzyme class catalyzes oxidation-reduction reactions?
Oxidoreductases catalyze oxidation-reduction reactions by transferring electrons between molecules.
Ref: NCERT Class 11 Biology Chapter 9: Biomolecules Enzymes - Properties Classification and Cofactors
Which enzyme catalyzes the breakdown of hydrogen peroxide into water and oxygen?
Peroxidase is an enzyme that catalyzes the decomposition of hydrogen peroxide into water and oxygen.
Ref: NCERT Class 11 Biology Chapter 9: Biomolecules Enzymes - Properties Classification and Cofactors
Which of the following statements is incorrect about cofactors?
Not all enzymes require cofactors to function; some enzymes work independently.
Ref: NCERT Class 11 Biology Chapter 9: Biomolecules Enzymes - Properties Classification and Cofactors
Which of the following is a saturated fatty acid?
Palmitic acid is a saturated fatty acid with no double bonds in its hydrocarbon chain.
Ref: NCERT Class 11 Biology Chapter 9: Biomolecules Enzymes - Properties Classification and Cofactors
Which of the following statements about coenzymes is incorrect?
Coenzymes are often loosely bound to enzymes and can be reused; they are not always permanently attached.
Ref: NCERT Class 11 Biology Chapter 9: Biomolecules Enzymes - Properties Classification and Cofactors
Which enzyme is responsible for catalyzing the conversion of carbon dioxide and water into carbonic acid?
Carbonic anhydrase catalyzes the conversion of carbon dioxide and water into carbonic acid.
Ref: NCERT Class 11 Biology Chapter 9: Biomolecules Enzymes - Properties Classification and Cofactors
Which of the following statements about coenzymes is incorrect?
Coenzymes are often loosely bound to enzymes and can be reused; they are not always permanently attached.
Ref: NCERT Class 11 Biology Chapter 9: Biomolecules Enzymes - Properties Classification and Cofactors
Which of the following statements about phospholipids is incorrect?
Phospholipids form structural components of cell membranes but do not store genetic information.
Ref: NCERT Class 11 Biology Chapter 9: Biomolecules Enzymes - Properties Classification and Cofactors