i) List the four chemical elements always present in protein - Leaving Cert Agricultural Science - Question 60 marks - 2014
Question 60 marks
i) List the four chemical elements always present in protein.
ii) Name the reagent used to test for the presence of protein in a food.
j) Identify the plant shown ... show full transcript
Worked Solution & Example Answer:i) List the four chemical elements always present in protein - Leaving Cert Agricultural Science - Question 60 marks - 2014
Step 1
i) List the four chemical elements always present in protein.
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Answer
The four chemical elements that are always present in proteins are Carbon (C), Hydrogen (H), Oxygen (O), and Nitrogen (N).
Step 2
ii) Name the reagent used to test for the presence of protein in a food.
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Answer
The reagent used to test for the presence of protein in food is Biuret reagent, which contains sodium hydroxide and copper sulfate.
Step 3
j) Identify the plant shown in the diagram.
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Answer
The plant shown in the diagram is Oats.
Step 4
ii) To which family does this plant belong?
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Answer
This plant belongs to the Gramineae family.
Step 5
iii) Name the parts labelled A and B.
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Answer
Part A is called a spikelet, and part B is referred to as a petiole, stalk, or panicle.
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