Digestion is the process during which food is broken down and absorbed - Leaving Cert Agricultural Science - Question a - 2008
Question a
Digestion is the process during which food is broken down and absorbed.
(i) Name one enzyme that helps in digestion and name the food that it breaks down.
(ii) Bile ... show full transcript
Worked Solution & Example Answer:Digestion is the process during which food is broken down and absorbed - Leaving Cert Agricultural Science - Question a - 2008
Step 1
Name one enzyme that helps in digestion and name the food that it breaks down.
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Answer
One enzyme that helps in digestion is amylase, which breaks down carbohydrates.
Step 2
Where is bile stored?
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Answer
Bile is stored in the gall bladder.
Step 3
Explain how this liquid affects fat molecules.
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Answer
Bile emulsifies fat, breaking it down into smaller droplets to increase the surface area for enzymes to act upon.
Step 4
State what substances fats are broken down into.
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Fats are broken down into fatty acids and glycerol.
Step 5
Give three functions of the liver.
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The liver breaks down red blood cells.
It regulates temperature and processes nutrients.
The liver produces bile and stores vitamins and minerals.
Step 6
In what part of the digestive system does absorption of food into the blood stream take place?
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Absorption of food into the bloodstream takes place in the small intestine.
Step 7
Name the parts labelled A, B, C, D, E, F.
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A = oesophagus (food tube)
B = stomach
C = liver
D = pancreas
E = small intestine
F = large intestine (colon)
Step 8
Name the parts labelled S, T, U, V, W, X.
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S = oesophagus
T = rumen
U = abomasum
V = omasum
W = small intestine
X = anus.
Step 9
State two differences between the digestive system of a pig and a sheep.
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Answer
Pigs do not have a ruminant system, while sheep are ruminants.
Food in pigs is stored in the stomach (single), while sheep have a multi-compartment stomach for digesting food.
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