5604454
Description
Flashcards by Farha Idrees, updated more than 1 year ago
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Created by Farha Idrees
over 8 years ago
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| Question | Answer |
| Define a balanced diet. | a diet which contains different food types in the correct amounts |
| Why does an unbalanced diet lead to malnutrition? | an unbalanced diet lacks one or more of the food types a person needs to keep healthy, therefore leading to malnutrition |
| List the 7 food types. | -carbohydrates -protein -water -fibre -minerals -vitamins -fat |
| define digestion | digestion: the process of breaking down and absorbing food |
| define excretion | excretion: the process of getting rid of waste |
| What is an enzyme? | special proteins that can break down large molecules into smaller ones |
| Where is food- a) physically b) chemically -broken down? | a) in the mouth and stomach- by muscles contracting b) in the mouth, stomach and small intestines- by enzymes/acids |
| Label this picture: | a: mouth b: gullet c: stomach d: small intestine e: large intestine f: anus |
| Place in order: a) the small intestine further digests the food and absorbs it into the blood b) the waste is then passed through the anus c) the stomach breaks the food down physically and chemically d) food enters the mouth e) in the large intestine, water is absorbed to make the waste more solid f) the food is then swallowed and passes into the gullet, and is then passed onto the stomach | d) food enters the mouth f) the food is then swallowed and passes into the gullet, and is then passed onto the stomach c) the stomach breaks the food down physically and chemically a) the small intestine further digests the food and absorbs it into the blood e) in the large intestine, water is absorbed to make the waste more solid b) the waste is then passed through the anus |
| Match this : a) 3300 (kJ) b) 15 500 (kJ) c) 8800 (kJ) with this : 1) 16-year-old girl 2) a baby 3) a labourer (man) | 1c) the girl --> 8800 (kJ) 2a) the baby --> 3300 (kJ) 3b) the labourer --> 15 500 (kJ) = the amount of energy a person needs varies in their lifetime |
| What is respiration? | the transformation of stored chemical energy into useful energy for the body |
| Write the word equation for respiration. | glucose + oxygen = carbon dioxide + water |
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