B8 Photosynthesis Flashcards
1
Q
What are the 4 main uses of glucose
A
To build cellulose, starch. Make amino acids and make lipids
2
Q
Why do plants use glucose to build cellulose
A
Cellulose is used to build up the cell wall so makes the plant stronger
3
Q
Why do plants use glucose to build starch
A
Glucose is soluble, if stored it will interfere with osmosis and transpiration and so needs to be stored as starch
4
Q
How do plants use glucose to make amino acids
A
They combine the sugars with nitrate ions and other mineral ions from the soil.
5
Q
Why do plants make lipids
A
As am energy store and to strengthen the cells
6
Q
Why are most leaves wide
A
Gives them a big surface area for light to fall on
7
Q
Why are most leaves thin
A
Diffusion distances for the gases are short
