carbohydrates

Question 1

chemicals that make up carbohydrates

Answer 1

Carbon, Hydrogen and Oxygen

Question 2

food sources of Simple and Complex carbohydrates

Answer 2

Simple: Honey, Apple and Mango
Complex: Celery, Tomato, Rice

Question 3

2 functions of carbohydrates in body

Answer 3

1. Main source of energy: Carbohydrates are the main source of energy to fuel a persons daily activities. 1g = 4kcal energy. Glucose is primary fuel for body cells.
   -> Excessive intake of carbohydrates will cause the carbs to convert into GLYCEROL/ FAT and be stored in the body until used.
2. Aids digestion: Carbohydrates in dietary fibre form, provides bulk to stools and works tgt with water to prevent constipation.

Question 4

define simple carbs in Monosaccharides and Disaccharides + examples.

Answer 4

Monosaccharides: simplest unit of carbohydrates. Eg, Fructose (fruit sugar: honey and fruits), Galactose (bonds with glucose to form lactose: dairy products) and Glucose (important source of energy: Honey, corn & fruit).

Disaccharides: 2 units of monosaccharides bonded together. Eg. Sucrose (F + GL : sugar cane, honey) , Lactose (G+GL : dairy products), Maltose ( GL+GL : sugar molasses, cooked sweet potato)

Question 5

define Complex carbs, Polysaccharides (starch & dietary fibre). + examples

Answer 5

Polysaccharides: Large carbohydrate molecule with 10/more monosaccharides bonded tgt.

Starch: Hundreds of glucose molecules bonded tgt into a chain-like molecular structure. Eg. Rice and potatoes

Dietary fibre
1. Cellulose: A insoluble component in the cell wall of plants which provides structure. Eg. Apples, wholegrain and celery
2. Pectin: Soluble component in the cell walls of certain plants. Eg. Apples, citrus and plum.