Revise what you know about the your intestines. Do you know what your pancreas does?
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This KS3 Science quiz takes another look at digestion. The human body is made up from organs and tissues that are arranged into systems. The digestive system is designed to process our food in order to obtain the nutrients that our body requires. When you eat something, the food passes through the following organs of the digestive system - oesophagus, stomach, small intestine and large intestine. In humans, the large intestine is roughly 1.5 metres long, whereas the small intestine can be up to 7 metres long. Confused? The 'large' and 'small' pertain to the diameter rather than the length!
There are several other organs that are part of the digestive system - notably the liver and pancreas. The liver has many jobs to do for your body, including the removal of toxins from the blood, storage of substances like vitamin B12 and glycogen and the production of bile.
Bile goes into the small intestine to emulsify the fats, making it easier for the enzymes to digest them. The pancreas produces many of the enzymes that carry out the process of digestion in the small intestine. On the inside of the small intestine, there are millions of villi. These are small projections on the surface through which the digested nutrients are absorbed.
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1.
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The small molecules are absorbed into the blood in the ....... |
|
[ ] |
large intestine |
[ ] |
pancreas |
[ ] |
small intestine |
[ ] |
stomach |
|
|
2.
|
The small intestine in an adult is ....... |
|
[ ] |
1-2 metres long |
[ ] |
6-7 metres long |
[ ] |
10-11 metres long |
[ ] |
over 20 metres long |
|
|
3.
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The removal of undigested food is called ....... |
|
[ ] |
absorption |
[ ] |
contraction |
[ ] |
egestion |
[ ] |
excretion |
|
|
4.
|
Glucose is stored in the ....... |
|
[ ] |
liver |
[ ] |
pancreas |
[ ] |
small intestine |
[ ] |
stomach |
|
|
5.
|
Fats are stored ....... |
|
[ ] |
in the large intestine |
[ ] |
in the pancreas |
[ ] |
in the stomach |
[ ] |
under the skin |
|
|
6.
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Which of the following is a function of the pancreas? |
|
[ ] |
Absorbs digested food into the blood |
[ ] |
Absorbs water from the gut |
[ ] |
Makes bile to break down fats |
[ ] |
Makes enzymes |
|
|
7.
|
What does the large intestine do? |
|
[ ] |
Absorbs digested food into the blood |
[ ] |
Absorbs water from the gut |
[ ] |
Makes bile to break down fats |
[ ] |
Makes enzymes |
|
|
8.
|
Which of the following is a job carried out by the liver? |
|
[ ] |
Absorbs water from the gut |
[ ] |
Makes bile |
[ ] |
Makes amylase |
[ ] |
Stores fats and glycerol |
|
|
9.
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The small intestine has special structures, called villi, which help absorption of digested food. Which of the following is NOT a feature? |
|
[ ] |
Good blood supply |
[ ] |
Impermeable walls |
[ ] |
Large surface area |
[ ] |
Thin layer of cells |
|
|
10.
|
Iodine solution is a yellow-brown colour and is used to test for starch. If starch is present what colour does the iodine turn? |
|
[ ] |
blue-black |
[ ] |
milky |
[ ] |
orange-red |
[ ] |
purple |
|
|
1.
|
The small molecules are absorbed into the blood in the ....... |
|
[ ] |
large intestine |
[ ] |
pancreas |
[x] |
small intestine |
[ ] |
stomach |
|
|
2.
|
The small intestine in an adult is ....... |
|
[ ] |
1-2 metres long |
[x] |
6-7 metres long |
[ ] |
10-11 metres long |
[ ] |
over 20 metres long |
|
|
3.
|
The removal of undigested food is called ....... |
|
[ ] |
absorption |
[ ] |
contraction |
[x] |
egestion |
[ ] |
excretion |
|
|
4.
|
Glucose is stored in the ....... |
|
[x] |
liver |
[ ] |
pancreas |
[ ] |
small intestine |
[ ] |
stomach |
|
|
5.
|
Fats are stored ....... |
|
[ ] |
in the large intestine |
[ ] |
in the pancreas |
[ ] |
in the stomach |
[x] |
under the skin |
|
|
6.
|
Which of the following is a function of the pancreas? |
|
[ ] |
Absorbs digested food into the blood |
[ ] |
Absorbs water from the gut |
[ ] |
Makes bile to break down fats |
[x] |
Makes enzymes |
|
|
7.
|
What does the large intestine do? |
|
[ ] |
Absorbs digested food into the blood |
[x] |
Absorbs water from the gut |
[ ] |
Makes bile to break down fats |
[ ] |
Makes enzymes |
|
|
8.
|
Which of the following is a job carried out by the liver? |
|
[ ] |
Absorbs water from the gut |
[x] |
Makes bile |
[ ] |
Makes amylase |
[ ] |
Stores fats and glycerol |
|
|
9.
|
The small intestine has special structures, called villi, which help absorption of digested food. Which of the following is NOT a feature? |
|
[ ] |
Good blood supply |
[x] |
Impermeable walls |
[ ] |
Large surface area |
[ ] |
Thin layer of cells |
|
|
10.
|
Iodine solution is a yellow-brown colour and is used to test for starch. If starch is present what colour does the iodine turn? |
|
[x] |
blue-black |
[ ] |
milky |
[ ] |
orange-red |
[ ] |
purple |
|
|