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
a. Write a balanced equation for cellular respiration.
96%
114 rated
Only available for registered users.
Sign up now to view full answer, or log in if you already have an account!
Answer
The balanced equation for cellular respiration is:
C6H12O6(aq)+6O2(g)→6CO2(g)+6H2O(l)
This equation shows the conversion of glucose and oxygen into carbon dioxide and water, releasing energy in the process.
Step 2
b.i. On the structure above, circle and name the link that joins the two sugar units that make up the disaccharide.
99%
104 rated
Only available for registered users.
Sign up now to view full answer, or log in if you already have an account!
Answer
The link that joins the two sugar units is called a glycosidic bond. It typically forms between the hydroxyl group of one sugar molecule and the first carbon of another sugar molecule.
Step 3
b.ii. Name the two sugar units that make up this disaccharide.
96%
101 rated
Only available for registered users.
Sign up now to view full answer, or log in if you already have an account!
Answer
The two sugar units that make up this disaccharide are glucose and fructose.
Step 4
b.iii. Suggest why cellulose cannot be used as a source of energy in the human body.
98%
120 rated
Only available for registered users.
Sign up now to view full answer, or log in if you already have an account!
Answer
Cellulose cannot be used as a source of energy in the human body because humans lack the enzyme (cellulase) required for its digestion. As a result, cellulose passes through the digestive system undigested, providing no caloric energy.
