Food preservation• Killing the microorganisms in food.

• Stopping their growth.

Refrigeration (Freezing)

• Low temperature inactivates the microorganisms, thus slowing down the multiplication of microorganisms

• For example fish and meat

Heating

• Heating kills the microorganisms and spore.

Canning and bottling

• Bacteria are killed by heating. Sealing the can in vacuum prevents the entry of microorganism. Microorganism cannot survive in the absence of oxygen in sealed cans.

Adding preservativeAdding preservative

• Preservative can prevent the growth of microorganisms.

• For example adding sulphur dioxide to fruit juices

• Cakes

Pasteurization

• 1):Pasteurization Food is heated to 72 for 15 seconds , then quickly cooled down to 10.

• 2): Food is heated to 63-68 for 30 minutes ,then quickly cooled down to 10

• For example milk and alcohol

Smoking• The meat or fish is hung over a charcoal fire

. the smoke dries the surface and also coats the meat or fish with substance inhibiting the growth of bacteria

Pickling• Food and vegetables .is salted first, the

smoke dries the surface and also coats the meat or fish with substance inhibiting the growth of bacteria .

Natural drying (dehydration)

• It must be less than 15 C.

• Use the wind or sun to make food dry.

• For example mushroom ,shark’s fin

Biology how to affect in Biology how to affect in sport ?sport ?

• Seek health is most people to want. most Seek health is most people to want. most easily method is carry out exercise .easily method is carry out exercise .

• Exercise can :Increase the Physical Exercise can :Increase the Physical FitnessFitness

• Increase health ,decrease to fill illIncrease health ,decrease to fill ill

Physical FitnessPhysical Fitness• Physical fitness contain safeguard physical Physical fitness contain safeguard physical

fitness and movement physical fitness and movement physical fitness .Safeguard physical fitness is human fitness .Safeguard physical fitness is human resist pathogen ,environment ,mechanical resist pathogen ,environment ,mechanical pressure…….. . Movement physical is human pressure…….. . Movement physical is human exercise ability. It contain movement exercise ability. It contain movement strength ,speed ,endurance ,action strength ,speed ,endurance ,action coordinate ,body equilibrium.coordinate ,body equilibrium.

• Base essential factor:Base essential factor:• .Cardiovascular Endurance.Cardiovascular Endurance• .Strength and Endurance.Strength and Endurance• .Flexibility.Flexibility• .Body Composition.Body Composition• .Relaxation.Relaxation

Health and illHealth and ill

• Sport is very important for our body. Sport is very important for our body. Because it can prevent disease. For Because it can prevent disease. For example:example:

• Coronary Heart diseaseCoronary Heart disease

• OsteoporosisOsteoporosis

• Other disease.Other disease.

Simple exerciseSimple exercise

•.Neck circle roundNeck circle round

•Function : spread neckFunction : spread neck

Simple exerciseSimple exercise

• Push brace exercisePush brace exercise

• Function strengthen armFunction strengthen arm

Bend knee exerciseBend knee exercise • Function: strengthen foot ,buttocks muscle Function: strengthen foot ,buttocks muscle