7. (a) Give two examples of limitations of the scientific method - Leaving Cert Biology - Question 7 - 2016
Question 7
7.
(a) Give two examples of limitations of the scientific method.
(i)
(ii)
(b) (i) When testing a solution for the presence of a reducing sugar, you used ... show full transcript
Worked Solution & Example Answer:7. (a) Give two examples of limitations of the scientific method - Leaving Cert Biology - Question 7 - 2016
Step 1
Give two examples of limitations of the scientific method.
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Answer
Two limitations of the scientific method include:
Extent of Knowledge: The scientific method is limited by the extent of our current knowledge, which can restrict investigations and lead to incomplete or biased results.
Human Error or Bias: There is always a possibility of human error or bias that can affect the application of the scientific method, impacting the validity of the results.
Step 2
1. Name the substance which you used as a control.
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Answer
The control substance used was either water or a non-reducing sugar (for example, sucrose).
Step 3
2. What colour were the contents of the control tube at the end of the test?
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The contents of the control tube were blue at the end of the test.
Step 4
1. Added a very small volume of a solution.
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A very small volume of a solution can be added using a dropper or a pipette.
Step 5
2. Ensured that the pH of a solution remained constant.
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To ensure that the pH of a solution remained constant, a pH buffer can be used.
Step 6
1. Transferred the cells to the slide.
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To transfer the cells to the slide, a swab can be used.
Step 7
2. Improved the visibility of the cells on the slide.
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The visibility of the cells can be improved by adding a stain (or named stain) or by adding a coverslip.
Step 8
1. Name the gel substance you used to trap the enzyme.
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The gel substance used to trap the enzyme was sodium alginate.
Step 9
2. Name the second substance you used to make the gel insoluble.
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The second substance used to make the gel insoluble was calcium chloride.
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