photosynthesis Flashcards
1
Q
What are the ‘reactants’ (the ingredients) in photosynthesis?
A
Carbon dioxide+water light energy Glucose+oxygen
———–
Chlorophyll
2
Q
What are the ‘products’ of photosynthesis?
A
Oxygen is produced as a by-product.
3
Q
What is the green chemical that makes the reaction happen?
A
Light energy is absorbed by the green chemical chlorophyll.
4
Q
Where is chlorophyll found?
A
- Chlorophyll is found in the thylakoid sacs of the chloroplasts
- Chlorophyll molecules are contained inside chloroplasts,
5
Q
How do you describe a reaction which requires an input of energy to get started?
A
endothermic reaction
6
Q
What is the glucose made during photosynthesis used for?
A
- It can be converted into chemicals required for growth of plant cells such as cellulose.
- converted into starch, a storage molecule, that can be converted back to glucose when the plant requires it.
7
Q
Plants Using glucose
A
- some used in respiration
- some stored a starch (which is insoluble)
- some used to produce fat or oil
- some used to produce cellulose for cell walls
- some used to produce amino acids for proteins
8
Q
How to increase the rate of photosynthesis
A
- increase concentration of carbon dioxide
- increase intensity of light
- increase temperature
