2. (a) Identify a non-metallic element, other than C, H, O and N, commonly found in proteins - Leaving Cert Biology - Question 2 - 2016
Question 2
2.
(a) Identify a non-metallic element, other than C, H, O and N, commonly found in proteins.
(b) Give a metabolic role of proteins in the human body.
(c) Give a ... show full transcript
Worked Solution & Example Answer:2. (a) Identify a non-metallic element, other than C, H, O and N, commonly found in proteins - Leaving Cert Biology - Question 2 - 2016
Step 1
Identify a non-metallic element, other than C, H, O and N, commonly found in proteins.
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Answer
A common non-metallic element found in proteins is Sulphur (S).
Step 2
Give a metabolic role of proteins in the human body.
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Answer
Proteins in the human body serve as enzymes or hormones, antibodies, or can act as contractile proteins.
Step 3
Give a structural role of proteins in the human body.
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Answer
Proteins play a structural role as components of hair or nails, muscle tissue, or as part of membranes and chromosomes.
Step 4
Name the two different biomolecular components of a lipid.
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Answer
(i) Glycerol
(ii) Fatty acid
Step 5
Where would you expect to find phospholipids in human cells?
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Answer
Phospholipids are typically found in the membranes of human cells.
Step 6
Give a role of a named mineral, other than iron, which is required in the human body.
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Answer
Named mineral: Calcium
Role: Calcium is essential for bone health and muscle function.
Step 7
What is the approximate percentage of water, by mass, in a human cell?
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Answer
The approximate percentage of water, by mass, in a human cell is between 70% to 95%.
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