Bio 3

The net movement of particles from a region of high concentration to a region of low concentration i.e. down the concentration gradient

Factors: 1) Temp

2) Distance to diffuse

3) Concentration gradient

4) Surface Area to volume ratio

The net movement of water molecules from an area of high water concentration to an area of low water concentration across a selectively permeable membrane. 

The movement of particles against a concentration gradient using energy

Water + CO2 = Glucose + Oxygen

- use light energy caught in chlorophyll to rip water molecules apart

Convert light energy to chemical energy

Nitrates - amino acids and proteins

Lack of = poor growth + yellow leaves

Magnesium - make chlorphyll

Lack of = leaves turn yellow

Phosphates - cell mebranes and DNA

Lack of = poor root growth + leaves purple

Potassium - enzyumes 

Lack of = poor fruits + discoloured leaves.

Breakdown by organism to small organic compounds of complex nutrient

Enzymatic release of energy from organic compounds which requires O2 or not

Oxygen + Glucose = Carbon doixide + Water + Energy

or 

Glucose = Lactic Acid + Some energy

Ceels need constant supply of oxygen for respirtation and remove carbon dioxide, respiratory system allow exchange to take place efficiently. 

Maintains steep diffusion gradient in alveoli.

The evaporation of water from the surface of a plant

1. Humidity

2. Wind speed

3. Temperature

4. Light intensirt

Because of transpiration it causes water to be pulled up xylem in stem and roots in a continuous flow

Is the removal of toxic waste from the body e.g. waste products of chemical reaction, excess water and salts taken in with diet and spent hormones.