Photosynthesis

Question 1

what is the structure of chloroplast

Answer 1

main structures
Thylakoid
Envelope
Inner member
stroma
Granum.

Question 2

explain the photo ionisation of chlorophyll

Answer 2

photo ionisation of chlorophyll
Light absorbs chlorophyll which leads to the electrons becoming excited and move up an energy level

Step two

Question 3

explain the light independent stage and electron transport chain

Answer 3

1) light is absorbed by the chlorophyll
2) electrons become excited and move through the electron transport chain
3) hydrogen ions are pumped through the thylakoid interior membrane space
4) creates an electro chemical gradient then hydrogens are pumped through atp synthase and atp is produced
5)electrons and hydrogens in chain are picked up by the NADP to make nadpH
6) water is broken down by photolysis
7)when electrons move through the electron transport chain photosystem 2 Electrons move to photosystem 1 leaving system two vacant which triggers photolysis of water

Question 4

Explain how the products of cyclic and non cyclic photo phosphorylation differ

Answer 4

in non cyclic photo phosphorylation both PS2 and PS1 are involved and as a result both ATP. Reduced NADP and oxygen are produced whereas in cyclic phosphorylation it only involved PS1 and as a result it only produces a lot of ATP

Question 5

Explain the limiting factors that reduced the rate of photosynthesis
Explain temperature

Answer 5

( check what graph looks like on notes )
Temperature is linked to the idea of enzymes at a low temperature there is less photosynthesis at a high temperature rate of photosynthesis is also low and it’s high at an optimum

Question 6

Explain limiting factor
How does carbon dioxide limit the rate of photosynthesis

Answer 6

( check notes to see graph )
1) when the graph is positive and increasing it shows that co2 is limiting photosynthesis
Whereas when the graph slows or plateaus it shows that there is another factor that’s limiting the rate of photosynthesis

Question 7

Limiting factors
Explain how light affects the rate of photosynthesis

Answer 7

( check the graph on notes )
As light increases the rate of photosynthesis increases shows me the which shows the rate of photosynthesis is dependent on the amount of light available
When the graph plateaus it shows that there is another facts that limits the rate of photosynthesis more then light and as a result when light increases the rate of photosynthesis does also increase

Question 8

What is an action spectra

Answer 8

Shows the effect of light wavelength in the rate of photosynthesis

Question 9

What is an absorption spectra

Answer 9

how much light of each wavelengths is absorbed by a pigment