Extension questions to start 1st feb

• Science
• Lower Secondary (Key Stage 3)

Extension questions to start 1st feb

What is the first stage of digestion?

1. Egestion
2. Absorption
3. Assimilation
4. Ingestion

What enzyme breaks down carbohydrates in the mouth?

1. Lipase
2. Pepsin
3. Amylase
4. Trypsin

Where does most nutrient absorption occur in the digestive system?

1. Stomach
2. Large intestine
3. Esophagus
4. Small intestine

What is the function of bile in digestion?

1. Produce enzymes
2. Digest carbohydrates
3. Absorb nutrients
4. Emulsify fats

Which organ produces insulin to regulate blood sugar levels?

1. Gallbladder
2. Liver
3. Pancreas
4. Spleen

Facts and names of
digestive enzymes

Why is pepsin different to other protease enzymes?

What is an enzyme?

1. A type of carbohydrate
2. A form of DNA
3. A protein that speeds up chemical reactions
4. A type of lipid

Where are enzymes found in the human body?

1. Only in the blood
2. Only in the liver
3. In various organs and tissues
4. Only in the brain

What is the function of enzymes in the body?

1. To regulate body temperature
2. To store energy in cells
3. To produce hormones in the body
4. To catalyze biochemical reactions

How do enzymes work?

1. By increasing the acidity of the environment
2. By decreasing the substrate concentration
3. By changing the temperature of the surroundings
4. By lowering the activation energy of reactions

What can affect the activity of enzymes?

1. Temperature and pH levels
2. Blood pressure and heart rate
3. Muscle strength and flexibility
4. Emotional state and mental concentration

Describe in detail the process of digestion from mouth to blood stream