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
Answer any five of the following parts (a) to (f):
(a) Name a protein that has a fibrous structure.
(b) Where in the human body would you expect to find the fibrou... show full transcript
Worked Solution & Example Answer: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
One example of a protein that has a fibrous structure is keratin. Keratin is a structural protein 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 expected to be found in the hair, nails, and the epidermis of the skin.
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 central component of chlorophyll, which plants use to capture light energy.
Step 4
State two reasons why water is required by living organisms.
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Answer
(i) Water acts as a solvent in which biochemical reactions occur, facilitating the transport of nutrients and waste.
(ii) Water helps in temperature regulation within organisms, maintaining a stable internal environment.
Step 5
Name the metallic element present in haemoglobin.
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Answer
The metallic element present in haemoglobin is iron (Fe).
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 is used to identify reducing sugars, such as glucose.
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