carbohydrates

Question 1

formation of carbohydrates

Answer 1

produced by plants by photosynthesis

Question 2

elemental composition

Answer 2

carbon, hyrogen, oxygen

Question 3

classification

Answer 3

- monosaccharides (C6H12O6)
glucose, fructose, galactose
- disaccharides (C12H22O11)
sucrose, lactose, maltose
-polysaccharides (C6H10O5)n
starch, pectin, glycogen

Question 4

biological functions of carbohydrates

Answer 4

• produce heat and energy
• excess carbohydrate is stored in the liver and muscles or converted into fat
• cellulose moves through the disgestive system preventing constipation

Question 5

gelatinisation

Answer 5

when starch grains are heated and absorbed in liquid they swell and burst and absorb the liquid forming a thickened solution

Question 6

dextrinisation

Answer 6

when carbohydrates are heated short grains of polysaccharide form causing the food to brown.