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OCR Biology A-Level Factors Affecting Photosynthesis Summary
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A HandWritten summary which contains all the necessary A* Content for Factors Affecting Photosynthesis at OCR A-Level Biology.
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Calvin Cycle:
CO2
RuBisCO
-Ru BP I
A
-
Unstable intermediate
A
TP TP
lipids ap ATP
+
,
r 2x
Glucose ,
r
amino acids NADPH
limiting factors limit :
the rate of photosynthesis
Needed
light intensity as an
energy produce NADPH and ATP
·
:
source to
Carbon dioxide Needed for carbon fixation produce GP TP
·
:
as a source to or
·
Temperature Increases rate of enzyme controlled reactions
:
↳ water factor would and stop
Not a
limiting
because the stomata
just close photosynthesis
:
and
light intensity the Calvin
cycle :
Reduced light reduces light dependent reaction ratee... less ATP and NADPH available
intensity
·
·
NADPH and ATP are needed to convert Gp to TP :: more GP and less TP
TP needed RuBP RuBD
is to
regenerate : less
·
Carbon dioxide concentration and the Calvin Cycle :
CO2 needed to form up and iP ... Less GP and TP
·
·
CO2 is not needed to form Rup from TP ... more RuBP
Temperature and the Calvin Cycle :
All reactions are
catalysed by enzymes
lower temperature less linetic
energy
:.. less
enzyme activity
· =
very high temperature enzymes denature
·
=
·
Less GP TP and RuBP
,
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