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What you will learn/ recap.
· The difference between autotrophic nutrition
and heterotrophic nutrition.
· How to describe the structure of a chloroplast.
· The functions of each part of the chloroplast.
· The stages of photosynthesis and what
happens at each stage.…read more

Slide 3

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What is the difference between autotrophs
and heterotrophs?
· Autotroph: Any organism that can take simple
inorganic substances and can use them to
synthesise organic molecules. I.E. It can make it's
own food.
Heterotrophs: Any organism that must digest organic
substances. I.E. can't make it's own food.…read more

Slide 4

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The Chloroplasts.
The thylakoid membrane contains:
· Chlorophyll and other photosynthetic pigments.
· Lots of thylakoid membranes stack together to form
grana/granum.…read more

Slide 5

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Fabulous Photosystems
· Each photosystem contain a large number of
chlorophyll molecules.
· Photosystem 1 (PS1) absorbs energy of
wavelength 700 nanometres.
· Photosystem (PS2) absorbs energy of
wavelength 6-80-690 nanometres.…read more

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Here is a past exam question from an
OCR paper. You have a minute to
answer it.
· The light-dependent stage of photosynthesis takes place on thylakoid
membranes in chloroplasts. These membranes surround the thylakoid space
(lumen) and are arranged into stacks known as grana. Fig. 2.1 is a diagram
showing the arrangement of photosystems in the thylakoid membrane, and
summarising the processes that take place there. Fig. 2.1 is a diagram
showing the arrangement of photosystems in the thylakoid membrane, and
summarising the processes that take place there.
Name the pigment
represented by P680 and
P700.…read more

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