photosynthesis & cellular respiration · photosynthesis & cellular respiration. energy...
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Photosynthesis & Cellular Respiration
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Energy Conversions inside the cell
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Location in the Cell
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Stroma
enzyme rich
solution
Thylakoid
place where chemical
reactions takes place
Grana
stacks of
thylakoids
green pigment that
absorbs solar
energy
Structure of chloroplast
Chlorophyll
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Mitochondria
Involved only in Aerobic respiration which requires
Oxygen
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Chemical Equation - Photosynthesis
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Chemical Equation - Respiration
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Photosynthesis A process that converts
light (solar or
radiant)energy into
stored (chemical) energy in the form of
food molecules,
glucose
Process used by
___________________
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Cellular Respiration A process that converts
stored (Chemical) energy in the food molecule,
glucose, into mechanical
energy (ATP)
Process used by BOTH
________________ &
________________
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What is ATP?•ATP (adenosine triphosphate) is energy
• Whenever a bond holding a phosphate is broken, a large amount of usable cellular energy is released.
ADENOSINE P P P
ADENOSINE P P P
ENERGY
ATP
ADP
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ATP CYCLE
• Occurs continuously in cells
• About 10 million new ATP molecules are made in every cell every second!!!
ADP
1. Stored Energy
Energy stored in
chemical bonds.
2. Releasing Energy
Energy released by
breaking bonds – used
to power cells
3. Energy Depleted
ADP has less
chemical energy
than ATP
4. Making ATP
Energy released by other
chemical reactions and
processes can be used to
bond a phosphate to ADP to
make ATP
+ P
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Cyclic Relationship
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Picture Summary
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example