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paper 2 notes + exam style
topic 6 GCSE edexcel biology
photosynthesis notes
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Fiki akinsanya
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Cards (8)
What is a limiting factor
a factor that slows or inhibits the rate of
reaction
what is the symbol + word equation for photosynthesis
water +
carbon dioxide
(in the presence of sunlight) =
glucose
+
oxygen
6h20 + 6co2 =
c6h1206
+
602
how are light intensity and the rate of photosyntheis related
light intensity
is directly
proportional
to the rate of
photosynthesis
and normally plateus due to another limiting factor
how does carbon dioxide relate to the rate of photosyntheis
carbon dioxide
increases the rate of
photosynthesis
however eventually plateus due to another limiting factor
How does temperature relate to the rate of photosynthesis
high temp provides more key for
enzymes
involved increased the rate (
Optum
= 25)
eventually at too high temperatures the enzymes
denature
and the rate decreases
Why is photosythesis important
used to
starch
to store for later - breaks down into
glucose
when energy is needed
used for
respiration
used to make
celluose
which is what the cell wall is made out of
What is inverse square law and how does it effect photosynthesis
light is
inversely
proportional to 1 /
distance
squared
rate of photosynthesis decreases as the distance increases because of inversely square law
how can light intensity be measured in a lab
light meter
inverse square law