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Food and digestion

In English

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Iron is needed to produce haemoglobin - for the transportation of oxygen. Sources: red meat, nuts and liver. Iron deficiency, anaemia, causes people to become tired/ weak because blood doesn't transport enough oxygen.

Why do we need the mineral iron ?

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38 questions
Animals and fungi store carbs as glycogen and plants store as starch.
How are carbs stored in animals, plants and fungi?
It doesn't function in alkali conditions and becomes denatured.
Why would the enzyme not break down protease in an alkali ph?
To kill bacteria - stop food poisoning!
Why is hydrochloric acid secreted by the stomach?