5197086
Description
Flashcards by Peter Fitzroy, updated more than 1 year ago
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Created by Peter Fitzroy
about 8 years ago
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| Question | Answer |
| advantages of convenience foods | save time, long shelf lives, portion controlled sizes, no cooking skills needed, disabled, only cook for one |
| disadvantages of convenience foods | reduces need for cooking skills-fewer people know how to cook, use a lot of packaging, high salt and sugar and fat content-may be hidden in foods |
| types of convenience foods | meals-frozen-chilled-fast foods, parts of meals-sauces,soups salads. Ingredients -stocks, packet mixes, pastry, pizza bases |
| genes are made of: | dna containing four amino acids in different sequences for form a code of instructions for each characteristic |
| what is genetic modification | it copies a gene for a certain characteristic from a plant or animal and then inserts it into another plant or animal, where it is then reproduced |
| gm foods include: | soya beans, sweetcorn, sugar, rapeseed, tomatoes, rice |
| advantages of gm foods | longer shelf life, resistance to diseases, faster gorwing rate, less fat, resistance to weed killing chemicals |
| disadvantages of gm foods | development of resistant microorganisms, infertile seeds mean farmers have to buy new seeds from farmer every year, affects of the ecology of the area where they grow, development of allergies if dna from certain plants and animals are put into others |
| organic plant foods | animals reared in natural surroundings without routine adding of chemicals-foods have a symbol to certify that they are organic |
| advantages of organic foods | considered to taste better-grown naturally in good soils, considered to be better for health-no pesticides used, better for the environment and ecoystems |
| disadvantages of organic foods | often more expensive than intensively grown foods, many have to be imported-transport-pollution |
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