The digestive system is made up of a number of different organs - Edexcel - GCSE Biology - Question 3 - 2012 - Paper 1
Question 3
The digestive system is made up of a number of different organs.
(a) Define the term organ.
(b) (i) How many of the statements are correct?
- The low pH of the st... show full transcript
Worked Solution & Example Answer:The digestive system is made up of a number of different organs - Edexcel - GCSE Biology - Question 3 - 2012 - Paper 1
Step 1
Define the term organ.
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Answer
An organ is defined as a group of different tissues that work together to perform a specific function in the body.
Step 2
How many of the statements are correct?
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Answer
Analyzing the statements:
The low pH of the stomach kills bacteria. - Correct
The low pH of the stomach provides optimum conditions for pepsin activity. - Correct
The pH of the stomach is low so that acid digests protein. - Correct
Thus, all three statements are correct. The answer is D (3).
Step 3
Complete the sentence: Protein is broken down to form.
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