1. Answer any five of the following parts (a) to (f):
(a) Name a protein that has a fibrous structure - Leaving Cert Biology - Question 1 - 2017
Question 1
1. Answer any five of the following parts (a) to (f):
(a) Name a protein that has a fibrous structure.
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Worked Solution & Example Answer:1. Answer any five of the following parts (a) to (f):
(a) Name a protein that has a fibrous structure - Leaving Cert Biology - Question 1 - 2017
Step 1
Name a protein that has a fibrous structure.
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Answer
A protein that has a fibrous structure is keratin, which is found in hair, nails, and the outer layer of skin.
Step 2
Where in the human body would you expect to find the fibrous protein referred to above?
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Answer
Keratin can be found in the outer layer of the skin, hair, and nails, providing strength and protection.
Step 3
Give a role of a named mineral, other than calcium, which is required by plants.
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Answer
Mineral: Magnesium.
Role in plants: Magnesium is essential for photosynthesis as it is a key component of chlorophyll, which plants use to convert sunlight into energy.
Step 4
State two reasons why water is required by living organisms.
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Answer
(i) Water acts as a solvent, facilitating chemical reactions in cells by dissolving nutrients and waste products.
(ii) Water helps in temperature regulation, maintaining stable internal conditions in organisms.
Step 5
Name the metallic element present in haemoglobin.
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Answer
The metallic element present in haemoglobin is iron (Fe), which is crucial for oxygen transport in the blood.
Step 6
Which type of food biomolecule may be identified by the use of Benedict’s or Fehling’s solution?
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Answer
Benedict’s or Fehling’s solution can be used to identify reducing sugars, such as glucose or fructose.
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