[{"id":268934,"question":"The biochemical reactions in which larger molecules are synthesized are called.","choices":[{"text":"Anabolism","value":"A"},{"text":"Catabolism","value":"B"},{"text":"Metabolism","value":"C"},{"text":"Digestive reactions","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":268933,"question":"The biochemical reactions in which larger molecules are synthesized are called.","choices":[{"text":"Catabolism","value":"A"},{"text":"Metabolism","value":"B"},{"text":"Anabolism","value":"C"},{"text":"Digestive rections","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":268932,"question":"Set of biochemical reactions that occur in living organisms in order to maintain life is called.","choices":[{"text":"Catabolism","value":"A"},{"text":"anabolism","value":"B"},{"text":"Metabolism","value":"C"},{"text":"Mutualism","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":268931,"question":"What is TRUE . according to the induced fit model of enzyme action.","choices":[{"text":"Enzyme's active site change shape to bind the substrate.","value":"A"},{"text":"Substrate must fit the enzyme perfectly before binding","value":"B"},{"text":"No shape changes occur durring binding","value":"C"},{"text":"Enzyme is inactivated during the process.","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":268930,"question":"An enzyme works best at a pH of 7.4. It is places in an acidic solution with a pH of 4.0.How will this affect the enzyme.","choices":[{"text":"The substrate will become inactive in an acidic environment","value":"A"},{"text":"the enzyme wil gain additional active sites","value":"B"},{"text":"The enzyme will catalyse reactions faster due to increased H ions","value":"C"},{"text":"The activ esite will be modified reducing substrate binding","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":268929,"question":"How does competitive inhibitor affect enzyme action","choices":[{"text":"attaches with the substrate","value":"A"},{"text":"Changes enzyme shape","value":"B"},{"text":"Attaches and blocks the active site","value":"C"},{"text":"Blocks the cofactors","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":268928,"question":"How does increasing temperatue affect enzyme activity.","choices":[{"text":"Increase actiity to a point","value":"A"},{"text":"Always decreases activity","value":"B"},{"text":"Makes enzymes non functional","value":"C"},{"text":"No effect on enzyme","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":268927,"question":"Prosthetic groups are.","choices":[{"text":"Required by all enzymes","value":"A"},{"text":"Protins in nature","value":"B"},{"text":"Tightly bound to enzyme","value":"C"},{"text":"Loosely attached with enzymes","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":268926,"question":"Enzyme are specific in their action becasue.","choices":[{"text":"Their active sites fit specific substaratres","value":"A"},{"text":"They are alwyas proteins","value":"B"},{"text":"They are consumed in reactions","value":"C"},{"text":"They work only at high temperatures","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":268925,"question":"What can happen if an enzyme is exposed to temperature that is highr than its optimal temperature.","choices":[{"text":"Enzyme activity rate will increase","value":"A"},{"text":"Enzyme's shape will change potentially reducing its activity","value":"B"},{"text":"Enzyme will speed up the reaction and remain stable","value":"C"},{"text":"Enzyme will become a substrate itself","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":268924,"question":"Which best defines an enzyme.","choices":[{"text":"A chemical that breaks down food","value":"A"},{"text":"A hormone that regulates metabolism","value":"B"},{"text":"A protein that speeds up reactions","value":"C"},{"text":"A molecule that stores energy","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":268923,"question":"Primarily, all enzymes are.","choices":[{"text":"Proteins","value":"A"},{"text":"Nucleic acids","value":"B"},{"text":"Carbohydrates","value":"C"},{"text":"Lipids","value":"D"},{"value":"E"}],"correctAnswer":1}]