CHAPTER 3 SCIENCE FORM 2

The diagram below shows an experiment carried out to study the absorption of substances through a Visking tube. The distilled water is tested at the end of the experiment. Which of the following is the result of this experiment?

• Starch (Present), Glucose (Absent)
• Starch (Absent), Glucose (Present)
• Starch (Absent), Glucose (Absent)
• Starch (Present), Glucose (Present)

Which of the following pairs of food classes and examples is correct?

• A
• B
• C
• D

The diagram below shows a man who is suffering from a disease.Which of the following nutrient is lacking in his diet?

• Iodine
• Vitamin C
• Calcium
• Protein

Which of the following are the functions of gall bladder and duodenum?

• A
• B
• C
• D

The diagram below shows human digestive system. Which of the following are correctly digested?

• Carbohydrate & Protein
• Protein & Vitamin
• Vitamin & Starch
• Carbohydrate & Starch

The table below shows three types of enzyme involved in the digestion of food.What are X, Y and Z?

• X (Fatty acid), Y (Maltose), Z (Glycerol)
• X (Maltose), Y (Amino acid), Z (Fatty acid)
• X (Amino acid), Y (Fatty acid), Z (Maltose)
• X (Maltose), Y (Glycer), Z (Amino acid)

The table below shows the observations for tests carried out on a food sample

• Fat and starch
• Protein and starch
• Protein and fat
• Glukosa and starch

The following information shows the steps taken in Millon’s test to determine the presence of protein.Which of the following shows the correct sequence for the test?

• P,Q,R,S
• P,Q,S,R
• Q,P,R,S
• Q,P,S,R

A boy had his lunch and dinner by taking the following food. Lunch (Nasi lemak, bread with butter, a glass of water. Dinner (Fried kuey teow, fruit salad, a cup of coffee). What is lacking in the boy’s diet?

• Fibre
• Fat
• Protein
• Carbohydrate

A brick-red precipitate is formed when sample X is heated together with two drops of Millon’sreagent as shown in the diagram. What is X?

• Honey
• Egg white
• Butter
• Palm oil