(a) (i) What is meant by the term digestion?
(ii) Why is digestion necessary?
(iii) Distinguish between mechanical and chemical digestion by writing a sentence about each - Leaving Cert Biology - Question 5 - 2011
Question 5
(a) (i) What is meant by the term digestion?
(ii) Why is digestion necessary?
(iii) Distinguish between mechanical and chemical digestion by writing a sentence abo... show full transcript
Worked Solution & Example Answer:(a) (i) What is meant by the term digestion?
(ii) Why is digestion necessary?
(iii) Distinguish between mechanical and chemical digestion by writing a sentence about each - Leaving Cert Biology - Question 5 - 2011
Step 1
What is meant by the term digestion?
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Answer
Digestion refers to the breakdown of food into smaller components that can be absorbed by the body.
Step 2
Why is digestion necessary?
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Answer
Digestion is necessary for the solubility of food for absorption, allowing nutrients to be transported into the bloodstream.
Step 3
Distinguish between mechanical and chemical digestion by writing a sentence about each.
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Answer
Mechanical digestion involves the physical grinding or cutting of food, such as chewing, while chemical digestion involves the action of enzymes or acids that break down food into simpler molecules.
Step 4
What part of the alimentary canal is labelled W?
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Answer
W is labelled as the duodenum or small intestine.
Step 5
The bile duct is connected to X. Name X.
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Answer
X is the gall bladder or liver.
Step 6
From which part of the alimentary canal does food arrive into W?
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Answer
Food arrives into W from the stomach.
Step 7
State one digestive function of the pancreas.
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Answer
The pancreas produces enzymes that aid in digestion, or it neutralizes chyme.
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