Edexcel IGCSE Biology · Spec 2.25
Vitamin A and Water in a Balanced Diet
Covers recall sources and functions of vitamin A, Explain why water is an essential dietary component and Link deficiency to biological effects.
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Vitamin A and Water in a Balanced Diet
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Spec 2.25
What you need to know
- Recall sources and functions of vitamin A
- Explain why water is an essential dietary component
- Link deficiency to biological effects
Active recall
Quick check
Answer each question before opening the answer.
Give one dietary source of vitamin A
Any one of liver, dairy foods, orange vegetables or dark-green vegetables
Why is water important in blood plasma?
It acts as a solvent and transports dissolved substances
What vision problem may result from vitamin A deficiency?
Poor vision in dim light, or night blindness
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