Answer any five of the following parts (a) to (f):
(a) State the two main reasons why food is required by all living organisms - Leaving Cert Biology - Question 1 - 2019
Question 1
Answer any five of the following parts (a) to (f):
(a) State the two main reasons why food is required by all living organisms.
1.
2.
(b) What is the ratio of hy... show full transcript
Worked Solution & Example Answer:Answer any five of the following parts (a) to (f):
(a) State the two main reasons why food is required by all living organisms - Leaving Cert Biology - Question 1 - 2019
Step 1
State the two main reasons why food is required by all living organisms.
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Answer
Energy for cellular respiration.
Raw materials for growth or repair of tissues.
Step 2
What is the ratio of hydrogen atoms to oxygen atoms in a carbohydrate?
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Answer
The ratio of hydrogen atoms to oxygen atoms in a carbohydrate is 2:1.
Step 3
Give a structural role of lipids in cells.
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Answer
One structural role of lipids in cells is to form the components of cell membranes.
Step 4
Give a metabolic role of lipids in cells.
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Answer
Lipids serve as a source or storage form of energy in cells.
Step 5
Give an example of a fat-soluble vitamin.
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Answer
An example of a fat-soluble vitamin is Vitamin A, D, or K.
Step 6
Name a disorder due to a dietary deficiency of the vitamin referred to in (e).
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Answer
A disorder due to a dietary deficiency of Vitamin A is night blindness.
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