9th Biology Chapter6 Enzymes
Sr # | Questions | A | B | C | D |
---|---|---|---|---|---|
1 | Optimum temperature for enzymes in human body is: | 36°C | 37°C | 38°C | 40°C | 2 | Enzyme that acts on lipid is called: | Protease | Lipase | Amylase | Pepsin | 3 | Chemically enzymes are: | Protein | Carbohydrates | Lipids | Fats | 4 | Which enzymes are used in dish washing to remove resistant starch residues? | Protease | Amylase | Lipase | All of these | 5 | Which of the following vitamins act as coenzyme? | Riboflavin | Thiamine | Folic acid | All of these | 6 | Term “metabolism” derived from the Greek words means: | Split | Change | Division | Break | 7 | Number of discovered enzymes are: | 200 | 2000 | 3000 | 3500 | 8 | Who proposed lock and key model? | Winhelm Kuhne | Daniel Koshland | Emil Fischer | Ibn-e-Nafees | 9 | 10 | Which enzyme breaks the peptide bond? | Amylase | Protease | Lipase | None | 11 | Which enzyme converts lipids into fatty acid and glycerol? | Lipase | Amylase | Pepsin | Trypsin | 12 | Who proposed induced-fit model? | Winhelm Kuhne | Daniel Koshland | Emil Fischer | Ibn-e-Nafees | 13 | Starch is broken down by an enzyme called: | Lipase | Pepsin | Amylase | All of these | 14 | Who first used the term enzyme? | Winhelm Kuhne | Daniel Koshland | Emil Fischer | Ibn-e-Nafees | 15 | Molecule on which enzymes act is called: | Substrate | Co-enzyme | Protein | Substrate-enzyme complex | 16 | Activation energy is required to: | Activate enzyme | Start a reaction | Speed up a reaction | None | 17 | Catalytic region of enzyme is called: | Cofactor | Coenzyme | Prosthetic group | Active site | 18 | Which one is an organic cofactor? | Flavin | Heme | Both 1 & 2 | None | 19 | Lock and key model was proposed in: | 1894 | 1896 | 1898 | 1890 | 20 | In which year the induced-fit model was proposed? | 1952 | 1954 | 1956 | 1958 | 21 | The concept of mechanism was first of all given by: | Ibn e Nafees | Winhelm Kuhne | Emil Fischer | Daniel Koshland |