Vitamins are required by the human body - VCE - SSCE Chemistry - Question 7 - 2018 - Paper 1
Question 7
Vitamins are required by the human body.
Which one of the following statements about vitamins is correct?
A. Vitamin D2 and vitamin D3 are structural isomers.
B. Vi... show full transcript
Worked Solution & Example Answer:Vitamins are required by the human body - VCE - SSCE Chemistry - Question 7 - 2018 - Paper 1
Step 1
A. Vitamin D2 and vitamin D3 are structural isomers.
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Answer
This statement is incorrect. Vitamin D2 (ergocalciferol) and vitamin D3 (cholecalciferol) are not structural isomers; they are different compounds that serve the same function in the body.
Step 2
B. Vitamin D can be stored in the fatty tissues of the body.
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This is true; vitamin D is a fat-soluble vitamin, allowing it to be stored in the body's fatty tissues for later use.
Step 3
C. Vitamin D is water-soluble due to the presence of the hydroxyl group.
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Answer
This statement is incorrect. Vitamin D is fat-soluble, not water-soluble. Although it contains a hydroxyl group, this does not confer solubility in water.
Step 4
D. Vitamin D is essential in the human diet as it cannot be manufactured by the body.
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Answer
This statement is misleading; while vitamin D can be synthesized by the skin when exposed to sunlight, dietary intake may still be necessary, especially in areas with limited sunlight.
