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. Vit... 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 with different structures.
Step 2
B. Vitamin D can be stored in the fatty tissues of the body.
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This statement is correct. Vitamin D is a fat-soluble vitamin, meaning it can 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. Its solubility is influenced by its chemical structure, which does not make it soluble in water despite having a hydroxyl group.
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 partially correct. While Vitamin D can be synthesized in the skin in the presence of sunlight, certain conditions can limit this production, making dietary intake important.
