Pancreatic juice contains enzymes which digest:

1.   ?    proteins and carbohydrates only
2.   ?    proteins and fats only
3.   ?    fats and carbohydrates only
4.   ?    proteins, fats and carbohydrates

Where is bile secreted and stored?

1.   ?    Secreted : bile duct & Stored : Liver
2.   ?    Secreted : Gall Bladder & Stored : Liver
3.   ?    Secreted : Liver & Stored : Bile Duct
4.   ?    Secreted : Liver & Stored : Gall Bladder

Where are proteins first digested in the alimentary canal?

1.   ?    colon
2.   ?    duodenum
3.   ?    mouth cavity
4.   ?    stomach

Which region of the alimentary canal does food pass through immediately before the rectum?

1.   ?    anus
2.   ?    colon
3.   ?    duodenum
4.   ?    ileum

Figure below shows the structure of a villus. Where will the most amino acids be present?

1.   ?    A
2.   ?    B
3.   ?    C
4.   ?    D

Which secretion does not contain digestive enzymes?

1.   ?    bile
2.   ?    gastric juice
3.   ?    intestinal juice
4.   ?    pancreatic juice

Which region of the alimentary canal has the largest internal surface area?

1.   ?    colon
2.   ?    duodenum
3.   ?    ileum
4.   ?    stomach

Which digestive process takes place in the mouth?

1.   ?    Chemical Digestion : take place in the mouth & Physical Digestion : take place in the mouth
2.   ?    Chemical Digestion : take place in the mouth & Physical Digestion : does not take place in the mouth
3.   ?    Chemical Digestion : does not take place in the mouth & Physical Digestion : take place in the mouth
4.   ?    Chemical Digestion :does not take place in the mouth & Physical Digestion : does not take place in the mouth.

Where do chemical digestion and absorption of food occur in the human alimentary canal?

1.   ?    Chemical Digestion : Oseophagus & Absorption : Colon.
2.   ?    Chemical Digestion : Oseophagus & Absorption : Stomach.
3.   ?    Chemical Digestion : Stomach & Absorption : Liver.
4.   ?    Chemical Digestion : Stomach & Absorption : Ileum.

In the human body, where is bile produced?

1.   ?    gall bladder
2.   ?    liver
3.   ?    pancreas
4.   ?    stomach

Where does bile enter the alimentary canal?

1.   ?    oesophagus
2.   ?    stomach
3.   ?    duodenum
4.   ?    colon

The diagram shows the effect of pH on the activity of two enzymes, a protease and an amylase, in the alimentary canal.


In which regions of the alimentary canal would these enzymes be most active?

1.   ?    Protese : Duodenom & Amylase : Colon.
2.   ?    Protese : Duodenom & Amylase : Stomach.
3.   ?    Protese : Stomach & Amylase : Colon.
4.   ?    Protese : Stomach & Amylase : Duodenom.

What would happen if a person’s bile duct became blocked?

1.   ?    Carbohydrate digestion would be reduced.
2.   ?    Fat digestion would be reduced.
3.   ?    Protein digestion would be slow.
4.   ?    The duodenum contents would be neutralized more quickly.

The diagram shows part of the alimentary canal. Which two structures produce substances involved in the digestion of fats?

1.   ?    1 and 5
2.   ?    2 and 3
3.   ?    3 and 4
4.   ?    4 and 5

In which two body organs does re absorption of water take place?

1.   ?    Colon and kidneys
2.   ?    Liver and duodenum
3.   ?    Kidneys and liver
4.   ?    Duodenum and colon

Which part of the alimentary canal is most acidic?

1.   ?    Colon
2.   ?    Ileum
3.   ?    Mouth
4.   ?    Stomach

What are the functions of the colon?

1.   ?    Water Absorbed : No , Enzymes Secreted : No
2.   ?    Water Absorbed : No , Enzymes Secreted : Yes
3.   ?    Water Absorbed : Yes , Enzymes Secreted : No
4.   ?    Water Absorbed : Yes, Enzymes Secreted : Yes

The table shows the results of an investigation into the absorption of products of digestion in the presence and absence of oxygen.

Which conclusion can be drawn from these results?

1.   ?    All products of digestion are absorbed by both active transport and diffusion.
2.   ?    All products of digestion are absorbed by diffusion only.
3.   ?    Amino acids and glucose are absorbed by active transport only.
4.   ?    Fatty acids and glycerol are absorbed mainly by diffusion.

Which is not a function of the liver?

1.   ?    formation of glycogen
2.   ?    formation of urea
3.   ?    production of bile
4.   ?    secretion of digestive enzymes

How do the muscles in the walls of the alimentary canal act when pushing a bolus of food along?

1.   ?    Circular muscles behind bolus : Contract & Longitudinal muscles behind bolus : Contract.
2.   ?    Circular muscles behind bolus : Contract & Longitudinal muscles behind bolus : Relax.
3.   ?    Circular muscles behind bolus : Relax & Longitudinal muscles behind bolus : Contract.
4.   ?    Circular muscles behind bolus : Relax & Longitudinal muscles behind bolus : Relax.

After eating, the pH in the mouth decreases. Which statement explains this decrease?

1.   ?    Bacteria release acids
2.   ?    Enzymes in the saliva release acids
3.   ?    Salivary glands release acids
4.   ?    taste receptors release acids

Figure 5 shows the structure of a villus in the small intestine. The arrows show
the direction of flow of fluids. After a meal of fried chicken, where will fatty acids and glycerol be present in the largest amounts?

1.   ?    A
2.   ?    B
3.   ?    C
4.   ?    D

Which secretion, released into the alimentary canal, contains no enzymes but speeds up fat digestion?

1.   ?    bile
2.   ?    intestinal juice
3.   ?    mucus
4.   ?    pancreatic juice

Which two organs are connected by the hepatic portal vein?

1.   ?    Intestine and kidneys
2.   ?    Intestine and liver
3.   ?    Liver and kidneys
4.   ?    Lungs and heart