8. (a) (i) To which group of biomolecules do enzymes belong?
(ii) Give one biological explanation why washing powder may contain enzymes - Leaving Cert Biology - Question 8 - 2016
Question 8
8.
(a) (i) To which group of biomolecules do enzymes belong?
(ii) Give one biological explanation why washing powder may contain enzymes.
(b) Answer the followi... show full transcript
Worked Solution & Example Answer:8. (a) (i) To which group of biomolecules do enzymes belong?
(ii) Give one biological explanation why washing powder may contain enzymes - Leaving Cert Biology - Question 8 - 2016
Step 1
To which group of biomolecules do enzymes belong?
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Answer
Enzymes belong to the group of biomolecules known as proteins.
Step 2
Give one biological explanation why washing powder may contain enzymes.
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Answer
Washing powders may contain enzymes because they help to break down organic stains, such as proteins and fats, thus enhancing the cleaning efficiency at lower temperatures.
Step 3
Name the enzyme you used in this investigation.
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Answer
The enzyme used in this investigation is amylase.
Step 4
Name the substrate of this enzyme.
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Answer
The substrate of amylase is starch.
Step 5
How did you vary the pH?
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Answer
The pH was varied by using different buffer solutions that were adjusted to specific pH levels.
Step 6
Name one factor you kept constant.
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Answer
One factor that was kept constant was the temperature during the enzyme activity experiments.
Step 7
How did you keep this factor constant?
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The temperature was kept constant by conducting all experiments in a temperature-controlled water bath.
Step 8
How did you measure the rate of enzyme activity?
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The rate of enzyme activity was measured using a spectrophotometer to quantify the decrease in absorbance as starch was broken down into sugars.
Step 9
What was the result of your investigation?
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The result of the investigation showed that enzyme activity increased with optimal pH and decreased significantly outside that range, demonstrating the importance of pH for enzymatic function.
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