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Summary CIE A-level Biology: Photosynthesis (A* achieved)

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Hi everyone:)) Here are my CIE A2 level Biology topic notes for the syllabus. These notes are tailored to the A level syllabus as well as the mark scheme as if you do enough past paper questions you will see a recurring pattern with the types of questions asked about each topic. My notes include summaries, labelled diagrams, and step-by-step explanations to difficult mechanisms such as how ADH and the lac operon works. Please keep in mind my notes are handwritten! These documents as well as other revision material eg. past papers and anki helped me to achieve an A* for A level Biology so I would recommend using these notes alongside other revision material as it may save you some time. Lastly, I just wanted to say GOODLUCK!! This is a very challenging and content packed course so I understand the stress you may be feeling. Feel free to message me anytime if you have any questions regarding my notes or even for advice on A level biology:))

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Chapter 13
Uploaded on
September 1, 2022
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13 -




PHOTOSYNTHESIS

6 ( Oz +
61120 -
CG Hiz 06 +
602
Ctiignt )


d
process in which
light energy is converted into chemical energy . There are 2 main

Stooges . . .




The light dependent stage

the where is such as
stage light energy captured by chloroplast pigments chlorophyll ,
carotene

and xanthophyll .




Photo activation 1 effect of light on
chlorophyll 's causes e- flow Products : ATP Ccnemi osmosis )

photolysis NADPH




1.
light dependent stage light energy
-




↳ in
thylakoid membrane
( light energy absorbed by
is
photosynthetic pigments in photo systems and converted to

chemical
energy

Photophosphorylation light used
:
for phosphorylation

Photolysis :
Using light to break water down


light absorbed by photo systems used
are
for 3
things
:




1.
Making ATP from ADP + Pi photo phosphorylation
-




2.
Making reduced NADP from NADP


Cnt ) electrons and
splitting into
3. wooer protons ions
oxygen
photolysis
=




2. light independent stage Colvin doesn't require
cycle light but requires products of
-




,


light dependent reactions
-
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