Detailed notes on module 5 OCR biology A

,·
Photosynthesis
CO2 + H20 Light ,
Ct20 + 82


· Site of
photosynthesis = Chlorophyll , Chloroplast

·
Spiragyra

· Pseudomonas =>
denitrifying bacteria (loves O2)

&
· In Dark -> seeks O2 from surrounding since
Spirogyra
can't produceO2

· In light> close to
Spirogyra
·

Chlorophyll = head

C



mga (hydrophilic
+
·




acid
· tail - fatty
Chydrophobic


> (PSI)




( Light dependent reaction (PSI) (contains
many pigments
Action Spectrum of of Blue (energy (
·
photosynthesis
Red C↓
energy
·
Absorption Spectra-> wavelength absorbed by pigment

,·
Non-cyclic +
Cyclic photophosphorylation

· Etc = electron transport chain
of H20
·
Photolysis
4) H20 >
- ze
-




+ 2H
+
+202



(cyclic) a
20-




ze-
d
⑭O
TP
etc neutralised
PSI
by PSI


ETP
·




Atp (thylakoid) ps
the
(non-cyclic
neutralise v

PSIr
Caranum) · 2H + in chemiosmosis

ATP
to generate
I-scheme =
·
non-cyclic
·
accept
ze- from PSI
involves PSI PSI
↳
-




,
ze + 2H +
-




= 24

·
Triangle = Cyclic
·
2H reduces/accepted by
-


only PSI
MADP
co-enzyme
· Products
+
· NADP ++ 2H-> NADPH + H

DATP coxidised) Creduced)

+
& NADPH + H




& 02

, · Chemiosmosis




·
z


Granum
⑳so
U

· lumen ·
Inter-granal
lamella

(Thylakcid)
3H + = ATP


ATP

synthase enzyme
↑
H
+
It +
"
E + H
+




↓
·
Lumen