Unti Of Life
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Name the two raw materials needed by plants in order to make food.
Water and carbon dioxide
Name the conditions needed for the process of photosynthesis take place e
Chlorophyll and light
Name the products made by the results of photosynthesis
Glucose and oxygen
What is the source of energy which powers the light reaction
Light energy
How is the energy captured
Absorbers by chlorophyll
What happens to the oxgen formed during stage 1
Realises into the atmosphere
Which two products of light reaction la are required for stage two
Hydrogen and atp
What does the letters stand for Where does the carbon dioxide for stage two come from if the plant lives (a) on land and (b) in water
A - air B- animals in the water
Where does the hydrogen come from to allow stage two to occur
From stage 1 ATP
Where does the energy come from to allow stage 2 to occur
From stage 1 ATP
What controls this carbon fixation of reaction
Enzyme
What are the stages of photosynthesis
Light reaction and carbon fixation
Describe the first stage of photosynthesis
Light reaction: the light energy from the sun is trapped by the chlorophyll in the chloroplast and is converted into chemical energy which is used to generate ATP. Water splits to produce hydrogen & oxygen. Oxygen diffuses from the cell
Describe the second stage of photosynthesis
Carbon fixation: a series of enzyme-controlled reactions which use hydrogen and ATP (Produced by the light reaction) with carbon dioxide to produce sugar
Complete the diagram (1) of photosynthesis on notes
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Complete the diagram (2) of photosynthesis on notes
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Look at the diagram in notes from increase of temperature. Explain what happens at point X
Rate of photosynthesis increases as temperature increases
Look at the disgrace effect the increasing temperature. Explain what’s happening at point Y
This is the optimum temperature of this type of plant. Rate of photosynthesis is fastest here
Look at the disgrace effect the increasing temperature. Explain what’s happening at point Z
Enzymes which controls photosynthesis are denatured
What can photosynthesis be limited by
Carbon dioxide light intensity temperature
Describe the 3 fates of glucose after its produces in photosynthesis
Starch - storage For respiration Cellulose ( structural )
What’s the definition of a limiting factor
A limiting factor is a factor while in short supply can slow or restrict the rate of photosynthesis
What is the definition of biodiversity
Total variety of amongst all living things on earth
What is the definition of a abiotic factor
Non living factors that can effect the distribution of organisms