Below is a list of some organs in the digestive system.
large intestine
liver
oesophagus
pancreas
salivary gland
stomach
Each word in the list may be used once, more than once, or not used at all.
(a)[4]
State the name of one organ from the list that:
is the place where physical digestion happens
releases hydrochloric acid
releases protease and amylase
releases insulin.
(b)[2]
State two roles of hydrochloric acid in the digestive system.
(c)[3]
Describe the importance of protease in the digestive system.
(d(i))[2]
Complete Table 3.1 with the expected results.
(d(ii))[1]
State the reason why the colours obtained were different for test-tubes X and Y.
Worked solution & mark scheme
This 12-mark question has a full step-by-step worked solution and mark scheme. One marking point: “the stomach” …