Science - Combined - 0653 CIE

Diet

Gbogbo ọrọ náà

You are what you eat, quite literally: the food in your diet supplies the energy and raw materials to build every cell. But it is not enough to eat plenty; you need the right balance of seven different nutrients. Miss out on just one, such as vitamin C or vitamin D, and a deficiency disease follows.

In this lesson you will learn what a balanced diet is, the dietary sources and importance of each nutrient (carbohydrates, fats, proteins, vitamins C and D, the mineral ions calcium and iron, fibre and water), and the causes of two classic deficiency diseases, scurvy and rickets.

Ebumnobi

[Core] Describe what is meant by a balanced diet
[Core] State the principal dietary sources and describe the importance of: (a) carbohydrates (b) fats and oils (c) proteins (d) vitamins, limited to C and D (e) mineral ions, limited to calcium and iron (f) fibre (roughage) (g) water

Akọmọ Ojú-ẹkọ

Diet links the chemistry of food molecules to human health. Examiners ask for the components of a balanced diet, the job and a food source of each nutrient, and the causes of scurvy and rickets. These are precise, learnable facts that reliably appear, and they connect to digestion, blood and bones elsewhere in the course.

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Ayẹwo Ẹkọ

Ekele diri gi maka imecha ihe karịrị na Diet. Ugbu a na ị na-enyochakwa isi echiche na echiche ndị dị mkpa, ọ bụ oge iji nwalee ihe ị ma. Ngwa a na-enye ụdị ajụjụ ọmụmụ dị iche iche emebere iji kwado nghọta gị wee nyere gị aka ịmata otú ị ghọtara ihe ndị a kụziri.

Ị ga-ahụ ngwakọta nke ụdị ajụjụ dị iche iche, gụnyere ajụjụ chọrọ ịhọrọ otu n’ime ọtụtụ azịza, ajụjụ chọrọ mkpirisi azịza, na ajụjụ ede ede. A na-arụpụta ajụjụ ọ bụla nke ọma iji nwalee akụkụ dị iche iche nke ihe ọmụma gị na nkà nke ịtụgharị uche.

Jiri akụkụ a nke nyocha ka ohere iji kụziere ihe ị matara banyere isiokwu ahụ ma chọpụta ebe ọ bụla ị nwere ike ịchọ ọmụmụ ihe ọzọ. Ekwela ka nsogbu ọ bụla ị na-eche ihu mee ka ị daa mba; kama, lee ha anya dị ka ohere maka ịzụlite onwe gị na imeziwanye.

Which nutrient is needed mainly for growth and repair of tissues? A. carbohydrate B. fat C. protein D. fibre Answer: C
A lack of vitamin C causes: A. rickets B. scurvy C. anaemia D. constipation Answer: B
Iron is needed in the diet to make: A. bones B. haemoglobin C. enzymes D. cellulose Answer: B
Which mineral ion makes bones and teeth hard? A. iron B. calcium C. nitrate D. magnesium Answer: B
Rickets in children is caused by a lack of: A. vitamin C B. vitamin D C. fibre D. protein Answer: B