food

Question 1

what are the benfits of food

Answer 1

provides energy
make necessary chemicals for metabolism
raw materials for growth and repair of organisms

Question 2

what are the elements in food

Answer 2

carbon, hydron, oxygen, nitrogen, phosphorus, sulphur

Question 3

elements present as dissolved salts

Answer 3

sodium, chlorine, potassium, magnesium, calcium

Question 4

what are the trace elements

Answer 4

iron, copper, zinc

Question 5

what is a monosaccharide

Answer 5

a carbohydrate that has one sugar unit.Its soluble in water and it has a sweet tase.An example is glucose or fructose [fruit]

Question 6

what is a disaccharide

Answer 6

a carbohydrate that has two sugar units combined.Its soluble in water and has a sweet taste.An example is maltose which is glucose and glucose [table sugar]

Question 7

what is a polysaccharide

Answer 7

a carbohydrate that is a chain of sugars linked.Its insoluble and its not sweet.An example is starch,cellulose or glycogen [pasta,flour]

Question 8

what is a structural role of carbohydrates

Answer 8

cellulose a carb is used for structure and support in the plant wall of the plant cell

Question 9

what is a metabolic role of carbohydrates

Answer 9

glucose breaks down to CO2 and water and energy is released

Question 10

what elements are in lipids

Answer 10

carbon hydrogen and oxygen

Question 11

what are the components of fats and oils

Answer 11

glycerol and 3 fatty acids

Question 12

what are the components of phospholipids

Answer 12

glycerol, 2 fatty acids and a phosphate

Question 13

what are some examples of saturated fats

Answer 13

beef, eggs and dairy

Question 14

what are some examples of unsaturated fats

Answer 14

olive oil, seeds and fish

Question 15

what is a structural role of lipids

Answer 15

its part of the cell membrane

Question 16

what is a metabolic role of lipids

Answer 16

it stores energy

Question 17

what elements are in proteins

Answer 17

carbon, hydrogen, nitrogen and oxygen and sometimes phosphorus and sulphur

Question 18

what are amino acids made

Answer 18

proteins [20]

Question 19

what is peptide

Answer 19

under 20 amino acids

Question 20

what is a polypeptide

Answer 20

over 20 amino acids

Question 21

sources of protein

Answer 21

egg, lean meat, beans

Question 22

give an example of fibrous protein

Answer 22

keratin found in hair

Question 23

give an example of globular protein

Answer 23

enzymes like amylase

Question 24

what is a structural role of protein

Answer 24

part of cell membraine

Question 25

what is a metabolic role of protein

Answer 25

enzymes that take part in metabolic reactions

Question 26

what is a vitamin

Answer 26

an organic compound required in tiny amounts to keep our body health

Question 27

what are the fat soluble vitamins

Answer 27

A, D, E, K

Question 28

what are the water soluble

Answer 28

B, C

Question 29

Vitamin C

Answer 29

required for the formation of connective tissues. Its found in citrus fruits. The deficiency disease is scurvy- teeth loss and bleeding gums

Question 30

Vitamin D

Answer 30

Needed for strong bones and absorption of calcium. Found in sun, egg yolks and dairy. Deficiency disease is rickets- weak and deformed bones

Question 31

give a mineral found in plants

Answer 31

calcium found in the salts in the soil and it helps cell walls attach to eachother

Question 32

give a mineral found in animals

Answer 32

calcium found in milk and cheese and it helps form bones and teeth.

Question 33

give functions of water

Answer 33

component of cytoplasm and body fluids like plasma provides structure for cells good heat absorber

Question 34

what is the general formula for carbs

Answer 34

Cx(H2O)y