Q2. This question is about digestion. (a) Name the enzymo that digests starch in the human digestive system. A student set up a model to represent the digestion and absorption of food molecules in the digestive system. The diagram shows the student's model. This is the method used. 1. Fill a test tube with water at 37^circ C 2. Test the water for starch and for sugar. 3. Mix together starch and enzyme solution and immediately test it for starch and for sugar. 4. Fill some partially permeable tubing with the starch and enzyme mixture. 5. Seal the tubing and place it in the test tube of water. 6. Place the test tube in a water bath at 37^circ C 7. After 30 minutes, test the mixture inside the partially permeable tubing and test the water in the test tube for starch and for sugar. (b) Suggest which parts of the body the partially permeable tubing and the water in the test tube represent. Partially permeable tubing Water in the test tube __

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Q2. This question is about digestion. (a) Name the enzymo that digests starch in the human digestive system. A student set up a model to represent the digestion and absorption of food molecules in the digestive system. The diagram shows the student's model. This is the method used. 1. Fill a test tube with water at 37^circ C 2. Test the water for starch and for sugar. 3. Mix together starch and enzyme solution and immediately test it for starch and for sugar. 4. Fill some partially permeable tubing with the starch and enzyme mixture. 5. Seal the tubing and place it in the test tube of water. 6. Place the test tube in a water bath at 37^circ C 7. After 30 minutes, test the mixture inside the partially permeable tubing and test the water in the test tube for starch and for sugar. (b) Suggest which parts of the body the partially permeable tubing and the water in the test tube represent. Partially permeable tubing Water in the test tube __

Answer 1

(a) The enzyme that digests starch in the human digestive system is **Amylase**.(b) In the student's model:- The partially permeable tubing represents the **Small Intestine**.- The water in the test tube represents the **Bloodstream**.

Answer 2

## Step 1: Identify the enzyme that digests starch in the human digestive system.The enzyme that digests starch in the human digestive system is called amylase. Amylase breaks down starch into simpler sugars.## Step 2: Understand the model set up by the student.The student has set up a model to represent the digestion and absorption of food molecules in the digestive system. The model involves a test tube filled with water at 37 degrees Celsius, a partially permeable tubing filled with a mixture of starch and enzyme, and a water bath to maintain the temperature.## Step 3: Identify the parts of the body represented by the model.The partially permeable tubing represents the small intestine, where the digestion of starch takes place. The water in the test tube represents the bloodstream, where the digested food molecules are absorbed.

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