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 types of tissues working together to perform a specific function in the body.
Step 2
How many of the statements are correct?
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Answer
Among the given statements, the first two are correct:
The low pH of the stomach kills bacteria. (Correct)
The low pH of the stomach provides optimum conditions for pepsin activity. (Correct)
The statement about the pH of the stomach being low so that acid digests protein is too ambiguous, as the low pH itself is for activation rather than solely for digestion.
Therefore, the correct count is 2 statements.
Step 3
Complete the sentence by putting a cross (X) next to your answer.
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