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WorksheetsIGCSE Biology - Nutrition and Digestion
Total questions: 20
Worksheet time: 12mins
The enzyme trypsin is produced in the:
Stomach
Pancreas
Salivary glands
Liver
Proteins are broken down into:
Amino acids
Glucose
Fatty acids
Glycerol
The type of enzyme responsible for the digestion of carbohydrates is:
Carbohydrases
Lipases
Proteases
Peptidases
Where fatty acids and glycerol get absorbed after the digestion of lipids is:
Blood capillaries in the villi
Lacteal in the villi
Stomach
Liver
The enzyme pepsin is produced in the:
Small intestine
Large intestine
Stomach
Pancreas
The main region for the digestion of starch is:
Mouth
Stomach
Large intestine
Small intestine
The end product of the digestion of starch is:
Glycerol
Glucose
Fatty acids
Amino acids
The enzyme responsible for the initial breakdown of proteins in the stomach is:
Trypsin
Pepsin
Amylase
Lipase
The enzyme responsible for the initial breakdown of starch in the mouth is:
Amylase
Maltase
Lipase
Pepsin
The main purpose of the digestive process is:
To break down large, insoluble food molecules into smaller, simpler molecules.
To convert food into energy.
To remove waste products from the body.
To absorb food into the blood stream
The optimum pH for the enzyme pepsin to work effectively is:
pH 1.5 - 2
pH 7.5
pH 6.0
pH 4.5
Where is lipase produced?
Liver
Small intestine
Gall bladder
Pancreas
Lipids are broken down into:
Fatty acids and glucose
Fatty acids and glycerol
Amino acids and glucose
Amino acids and glycerol
A positive result for a biochemical test for starch would be:
Add iodine, yellow solution
Add biuret, purple solution
Add iodine, blue / black solution
Add benedict's, brick red solution
A positive result for a biochemical test for protein would be:
Add iodine, yellow solution
Add biuret, purple solution
Add iodine, blue / black solution
Add benedict's, brick red solution
When food is physically broken down into smaller pieces by tearing, slicing, churning and mixing.
Digestion
Mechanical Digestion
Chemical Digestion
Saliva
Waves of muscle contractions that push food toward the stomach.
Peristalsis
Frequency
Hertz
Wave length
Which factor affects the dietary needs of humans?
Age
Gender
Activity
All of the above
What is a balanced diet?
A diet that contains only carbohydrates
A diet that contains all the needed nutrients in correct amounts
A diet that contains only proteins
A diet that contains only fats
What is the deficiency disease caused by lack of Vitamin C?
Scurvy
Rickets
Anaemia
Kwashiorkor
