Answer any five of the following parts (a) to (f):
(a) Name the four elements found in all proteins - Leaving Cert Biology - Question 1 - 2022
Question 1
Answer any five of the following parts (a) to (f):
(a) Name the four elements found in all proteins.
(b) Name an element that is only sometimes found in proteins.
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Worked Solution & Example Answer:Answer any five of the following parts (a) to (f):
(a) Name the four elements found in all proteins - Leaving Cert Biology - Question 1 - 2022
Step 1
Name the four elements found in all proteins.
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Answer
The four elements found in all proteins are Carbon (C), Hydrogen (H), Oxygen (O), and Nitrogen (N). These elements are the fundamental building blocks of amino acids, which are the monomers that make up proteins.
Step 2
Name an element that is only sometimes found in proteins.
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Answer
An element that is only sometimes found in proteins is Phosphorus (P). While it is not a component of every protein, it can be part of certain amino acids and nucleotides.
Step 3
How many common amino acids are found in proteins?
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Answer
There are twenty (20) common amino acids that are found in proteins. These amino acids combine in various sequences to form the diverse proteins necessary for biological functions.
Step 4
Name any one fibrous protein.
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Answer
One fibrous protein is Keratin. Keratin is a structural protein that is a key component of hair, nails, and the outer layer of skin.
Step 5
Give one metabolic role of proteins in living organisms.
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Answer
One metabolic role of proteins in living organisms is to act as enzymes. Enzymes are biological catalysts that speed up chemical reactions without being consumed in the process.
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