Give the deficiency diseases for vitamin C, vitamin D and iron.
Reveal answer
Vitamin C: scurvy. Vitamin D: rickets. Iron: anaemia.
Key words: scurvy · rickets · anaemia
2(e) NUTRITION · RECALL
2.25 Sources and functions of dietary components
22 recall questions. Answer from memory, reveal the answer, then rate yourself. Ratings stay on this device.
Ratings are saved in this browser on this device, under a KS4 key kept separate from International A Level recall. Written answers are temporary and cleared when you leave the page. Use Reset to clear the ratings on this device.
Why do we need calcium?
Reveal answer
For strong bones and teeth (also blood clotting and muscle contraction).
Key words: bones · teeth
Why does fibre prevent constipation?
Reveal answer
Fibre adds bulk → gut muscles push against it → peristalsis moves faeces along easily.
Key words: bulk · peristalsis
What is meant by the term vitamin?
Reveal answer
An organic micronutrient required in small amounts for normal function.
Key words: vitamin
What is meant by the term mineral?
Reveal answer
An inorganic element or ion required in the diet.
Key words: mineral
What is meant by the term anaemia?
Reveal answer
A condition involving reduced oxygen-carrying capacity of blood; iron deficiency is one cause.
Key words: anaemia
What is meant by the term scurvy?
Reveal answer
Disease caused by severe vitamin C deficiency.
Key words: scurvy
What is meant by the term rickets?
Reveal answer
Poor bone mineralisation in children, often linked to vitamin D deficiency.
Key words: rickets
Required sources and functions, Carbohydrate. Example sources? Principal function?
Reveal answer
Example sources: Bread, rice, pasta, potatoes, fruit. Principal function: Respiratory substrate and energy supply.
Key words: Carbohydrate
Required sources and functions, Protein. Example sources? Principal function?
Reveal answer
Example sources: Pulses, eggs, fish, meat, dairy, nuts. Principal function: Amino acids for growth, repair and functional proteins.
Key words: Protein
Required sources and functions, Lipid. Example sources? Principal function?
Reveal answer
Example sources: Oils, nuts, seeds, dairy, oily fish. Principal function: Energy store, membranes and insulation.
Key words: Lipid
Required sources and functions, Vitamin A. Example sources? Principal function?
Reveal answer
Example sources: Liver, dairy, eggs; carotenoids in leafy vegetables. Principal function: Visual pigments and epithelial health.
Key words: Vitamin A
Required sources and functions, Vitamin C. Example sources? Principal function?
Reveal answer
Example sources: Citrus, berries, peppers and other vegetables. Principal function: Collagen synthesis and connective tissue.
Key words: Vitamin C
Required sources and functions, Vitamin D. Example sources? Principal function?
Reveal answer
Example sources: Oily fish, eggs, fortified foods; skin synthesis in sunlight. Principal function: Calcium absorption and bone mineralisation.
Key words: Vitamin D
Required sources and functions, Calcium. Example sources? Principal function?
Reveal answer
Example sources: Dairy, fortified alternatives, leafy vegetables. Principal function: Bones/teeth, muscle and signalling.
Key words: Calcium
Required sources and functions, Iron. Example sources? Principal function?
Reveal answer
Example sources: Meat, pulses, fortified cereals, leafy vegetables. Principal function: Haemoglobin synthesis.
Key words: Iron
Required sources and functions, Water. Example sources? Principal function?
Reveal answer
Example sources: Drinks and water-rich foods. Principal function: Solvent, transport and temperature regulation.
Key words: Water
Required sources and functions, Dietary fibre. Example sources? Principal function?
Reveal answer
Example sources: Whole grains, pulses, fruit and vegetables. Principal function: Bulk and healthy gut movement.
Key words: Dietary fibre
True or false, and why? “All carbohydrate is table sugar.”
Reveal answer
False. Carbohydrates include monosaccharides, disaccharides and polysaccharides such as starch.
True or false, and why? “Protein is only needed for muscle.”
Reveal answer
False. Proteins include enzymes, antibodies, receptors and many structural molecules.