The diagram shows the human digestive system - Junior Cycle Science - Question b - 2007
Question b
The diagram shows the human digestive system.
(i) Give a digestive function of organ A.
Function
_________________
(ii) In the small intestine starch is broken ... show full transcript
Worked Solution & Example Answer:The diagram shows the human digestive system - Junior Cycle Science - Question b - 2007
Step 1
Give a digestive function of organ A.
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Answer
One digestive function of organ A is to produce bile, which helps to emulsify and break down fats.
Step 2
Identify the enzyme, and the substrate named in the reaction above.
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Answer
Enzyme: amylase
Substrate: starch
Step 3
Give a function of the small intestine other than digestion.
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Answer
One function of the small intestine, other than digestion, is the absorption of nutrients into the blood.
Step 4
Describe a simple laboratory experiment to show the release of chemical energy from food as heat.
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Answer
A simple experiment is to burn a peanut in a controlled environment and measure the temperature change of water placed above it in a calorimeter. As the peanut burns, the heat produced will raise the temperature of the water, demonstrating the release of chemical energy.
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