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8.1 The Cell Membrane
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8.2 Cells and Energy
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In photosynthesis, plants
take in carbon dioxide
and water and release
glucose and oxygen
wastes.
Photosynthesis is a
chemical reaction that
takes place in the
chloroplasts of plant
cells.
During photosynthesis,
plants use the energy
of sunlight to produce
energy-rich molecules
called carbohydrates
(ex. glucose).
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Chloroplasts are where
photosynthesis occurs.
Chloroplasts work
much like solar cells
found in calculators.
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http://app.discoveryeducation.com/player/view/assetGuid/C0F229A79DC6-41CF-B27A-86D2CBCF9D51
http://app.discoveryeducation.com/player/view/assetGuid/c1a723a1-101b47e4-905e-bd4496bda9ca
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The Sun provides Earth
with a steady source of
light.
Your eyes see sunlight
as white light, but it is
really made up of
different colors of light.
A clear prism can split white
light into a rainbow of color.
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Light is part of a collection of waves known
as the electromagnetic spectrum.
Waves can be described by their
wavelength (length from peak to peak), and
their energy.
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Color is how we experience the energy of
light.
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A pigment is a
molecule that
absorbs some colors
of light and reflects
others.
Chlorophyll is the
main pigment used
in photosynthesis.
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Chlorophyll
absorbs mostly
blue and red light,
and reflects green
light.
This is why most
plants look green.
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Cellular respiration is a
chemical reaction that
occurs in all living
things.
Cells use oxygen and
glucose to produce
carbon dioxide, water,
and energy.
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In most eukaryotic
organisms, cellular
respiration takes place in
the mitochondria of cells.
During cellular respiration,
energy is stored in a
molecule called ATP while
some energy is released as
heat.
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The chemical equations of photosynthesis
and respiration have an interesting
relationship.
The reactants in photosynthesis are the
products in cellular respiration!
The reactants in cellular respiration are the
products in photosynthesis!
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http://youtu.be/pdgkuT12e14
Chromatography:
http://www.phschool.com/science/biology_pl
ace/labbench/lab4/intro.html