1) What does the substrate turn into after reaction? a) An enzyme b) A product c) An active aite d) A thing too incomprehensible for our minds to imagine 2) Where do the substrate and enzyme collide? a) At the active site b) On the amino acids c) Near the DNA molecules d) In the catalyst 3) What type of system is the reaction named? a) Key and keyhole system b) Door and hinge system c) Lock and key system d) Glycerol and amino acids system 4) What is the best temperature for the standard enzyme to react at? (Cº) a) 37 b) 27 c) 10 d) 999 5) What does a catalyst do to a reaction? a) Slow it down b) Nothing c) Speed it up d) Blow it up 6) Enzymes are a protein. a) True b) False 7) What does the enzyme protease breakdown? a) Carbohydrates b) Lipids c) Protein d) Vitamins 8) What does the enzyme amylase breakdown? a) Carbohydrates b) Lipids c) Protein d) Vitamins 9) What does the enzyme lipase breakdown? a) Carbohydrates b) Lipids c) Protein d) Vitamins 10) Enzymes help break down and form molecules. a) True b) False

Enzymes KS3

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