Topic 4 Photosynthesis And limiting factors + Flashcards
What does photosynthesis use energy to do
Change carbon dioxide and water into glucose and oxygen
Where does photosynthesis take place
In chloroplasts in that contain chlorophyll that absorbs light
What type of reaction is photosynthesis
Endothermic (energy is transferred from the surroundings)
Word equation for photosynthesis
Carbon dioxide + water -> glucose + oxygen
Symbol equation for photosynthesis
6CO2 + 6H2O ->C6H12O6 + 6O2
What are the five main ways plants use glucose
For respiration
making cellulose
making amino acids
stored as oils or fat
stored as starch
How do plants use glucose for respiration
They transfers energy from glucose which enables the plants to convert the rest of the glucose into various other useful substances
How do plants use glucose in making cellulose
Glucose is converted into cellulose for making strong plant cell walls
How do plants use glucose when making amino acids
Glucose is combined with nitrate ions to make amino acids which are then made into proteins 
How is glucose used in plants when storing oils or fat
Glucose is turned into lipids for storing in seeds
How is glucose used in plants when storing starch
Glucose is turned into starch and stored in roots stems and leaves ready for when photosynthesis isn’t happening like in winter
Why is starch better for storing than glucose
Starch is insoluble
What would happen to a cell with lots of glucose
Withdraw in loads of water and swell up
What does a limiting factor mean
Is stopping photosynthesis from occurring any faster
What three things affect the rate of photosynthesis
Light intensity
concentration of CO2
temperature
