Bananas provide essential vitamins and minerals, such as vitamin B₆ and vitamin C, along with dietary fibre and energy - VCE - SSCE Chemistry - Question 5 - 2020 - Paper 1
Question 5
Bananas provide essential vitamins and minerals, such as vitamin B₆ and vitamin C, along with dietary fibre and energy. During the ripening process, the banana chang... show full transcript
Worked Solution & Example Answer:Bananas provide essential vitamins and minerals, such as vitamin B₆ and vitamin C, along with dietary fibre and energy - VCE - SSCE Chemistry - Question 5 - 2020 - Paper 1
Step 1
Write a balanced equation for cellular respiration.
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Answer
The balanced equation for cellular respiration can be represented as:
ightarrow 6CO_2(g) + 6H_2O(l)$$
In this equation, one molecule of glucose reacts with six molecules of oxygen to produce six molecules of carbon dioxide and six molecules of water.
Step 2
On the structure above, circle and name the link that joins the two sugar units that make up the disaccharide.
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Answer
The link that joins the two sugar units is called a glycosidic bond. In the diagram, it is the oxygen atom connecting the two rings.
Step 3
Name the two sugar units that make up this disaccharide.
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Answer
The two sugar units that make up this disaccharide are glucose and fructose.
Step 4
Suggest why cellulose cannot be used as a source of energy in the human body.
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Answer
Cellulose cannot be used as a source of energy in the human body because humans lack the enzyme, cellulase, necessary to break down cellulose into glucose molecules. Without this enzymatic breakdown, cellulose remains undigested.
