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Summary notes on A level Biology Photosynthesis - OCR A

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Summary, including detailed diagrams of the photosynthesis process in plants. This follows the A level Biology OCR A specification.

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The light-dependent stage
of the chloroplasts
thylakoid membranes
.



↳ takes place in the
in the photosystems .
4.
light energy is absorbed by photosynthetic pigments
↳ Makes ATP
NADP to reduced NADP
>
-
H+ ions from water used to reduce Coenzyme .




Non-cyclic photophosphorylation




I
e-acceptor
e-acceptor O ↓
O H+
chemiosmosis!
-


e
N
+
NADP- >
This is
ATP red. NADP

& App Chemiosmosis -> the movement of

excited + Pi
e
-

N
Je- ne-
#+ sprotons) across a membrane

election
drive Synthesis
light
transport to ATP .




light
↓ ↓
PSI PSI ↳ ATP a red NADP
makes .




↳ Uses PSI & PSII

-
Makes lots of ATP .




H20 -
2e + 2 + +
+ E
photolysis

Cyclic photophosphorylation




light
↳ makes ATP
Only
>
- uses PSI
only
↳ less ATP
makes .




o

PSI




Light-independent stage - > Calvin Cycle
this reaction
Rubis[o which catalyses .




enzyme
,
- occurs in the Stroma which contains the
,



>
-
temperature -
sensitive due to enzymes .




- NADP ATP hexose
Uses <O2 ,
red .
& to form a
sugar .




340z


& Carbonation




&
RuBisCo



3xRUBP80-00-0-0-0 -



1 ⑧-0-0-0-0-0-0-0 3. nexose
bisphosphate



3AD
L
~




regeneration
0000-0-06xG3
SxTP 0-0-0-
N 6 ATP
recycled &


↓ GNAD reduction



0-0-0-0
1xTP

goes to

make glucose


The 6 times to make glucose
cycle happens

9) 3p =
glycerate -

3-phosphate
TP =
trise phosphate

Connected book
 image
Publisher: maart 2017 ISBN: 9780198351948 Edition: 1

Document information

Study Level
Subject
Summarized whole book?
Yes
Uploaded on
June 19, 2025
Number of pages
1
Written in
2024/2025
Type
Summary
$11.18

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