The Digestive System

The tube that carries food to the stomach, by muscular action is called the
1. trachea
2. oesophagus
3. small intestine
4. large intestine
The breaking down of food into its molecules is known as
1. Absorption
2. Assimilation
3. Ingestion
4. Digestion
Canines are used for
1. Slicing
2. Grinding
3. Tearing
4. None of the above
The pancreas produces
1. Acid
2. Bile
3. Enzymes
4. Saliva
The liver produces
1. Bile
2. Fats
3. Enzymes
4. Acid
The movement of food from the blood to the body cells is known as
1. Absorption
2. Assimilation
3. Ingestion
4. Digestion
The substance acted on by an enzyme is called
1. product
2. glucose
3. saliva
4. substrate
The enzyme which breaks down maltose into glucose is known as
1. Amylase
2. Substrate
3. Maltase
4. Catalyst
A solution of starch was incubated at 37 C in the presence of amylase. When iodine was added to the solution, the colour seen was
1. Brown
2. Brick red
3. Pink
4. Blue-black
A solution of starch was incubated at 37 C in the presence of amylase. When Benedicts test was carried out on the solution, the colour seen was
1. Pink
2. Brown
3. Blue-Black
4. Brick-red
Bile helps to
1. lower the pH of the stomach
2. break down fats
3. absorb food molecules
4. break down starch
Amylase is an enzyme which breaks down
1. starch into glucose
2. starch into maltose
3. glucose into starch
4. maltose into glucose
Absorption occurs mostly in the
1. small intestine
2. stomach
3. large intestine
4. mouth
The elimination of undigested food from the body is known as
1. Assimilation
2. Ejection
3. Excretion
4. None of the above
Catalysts
1. are only found in saliva
2. change the speed of a chemical reaction
3. are only found in the digestive system
4. are used up in chemical reactions
A number of teeth in a human adult is
1. 28
2. 32
3. 30
4. 34

The Digestive System

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