10 Photosynthesis (PDF)

Energy

And
Photosynthesis

Energy and Life
„ Energy is the capacity to do work
„ All living things require energy
„ Cell “work” that requires energy:
‟
‟
‟
‟

Grow
Reproduce
Transport
Move

amoeba
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Energy and Life
„ Autotrophs: Organisms make their
own food
‟ Plants, some protists,bacteria
‟ Producers

„ Heterotrophs: Obtain energy from
the foods they consume
‟ Eat producers or other consumers
‟ Animals, fungi, some protists,
bacteria
‟ Consumers
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ATP
„ ATP: Adenosine Triphosphate.
‟ adenosine molecule with 3 phosphate
groups.
„ Energy source for cells

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Adenosine TriPhosphate

Adenosine DiPhosphate

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Creating ATP From ADP

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Photosynthesis
„ Photosynthesis: The
process that plants,some
protists and bacteria use
to make glucose.
‟ Take in CO2 and H2O
from the environment
‟ Converts sunlight
energy into chemical
energy in the bonds of
glucose
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Photosynthesis

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The Nature of Light
„ Light is packets of energy that travel
in waves

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