Transcript Photosynthesis, Cellular Respiration, & ATP

Photosynthesis, Cellular
Respiration, & ATP
Energy
• Where do plants get their energy from?
– The sun
• During which process?
– Photosynthesis
• Where do animals get their energy from?
– Food
Energy
• Why do we need energy?
– To move, run, eat, sleep, metabolize
Cells and energy
• Cells need energy. Why?
– To move molecules during transport
– Cell division
– Move proteins
– Move cilia and flagella
– TO MAINTAIN HOMEOSTASIS!!!!
Cells and energy
• What do cells use for energy?
– Adenosine Triphosphate (yes you need to know
this word)
ATP
• How is ATP made?
– Adenosine + 1
phosphate = AMP
• Adenosine + 2
phosphates = ADP
– Adenosine + 3
phosphates = ATP
– Which has the most
energy? ATP
ATP
• How does a cell get to the energy in ATP?
– The bond between the second and third
phosphate is broken and energy is released
*Can be recycled in the cell!!!
Photosynthesis
• The process which plants make glucose and
oxygen from carbon dioxide, water and
sunlight.
• Photosynthesis is broken into two stages.
Photosynthesis Materials
• Sunlight is trapped by
the pigment chlorophyll
in the chloroplast
• Water is taken in by the
roots
• Carbon dioxide is taken
in by the stomata on
the underside of the
leaves.
Photosynthesis Products
• Oxygen is breathed out
by the plants through
the stomata
• Glucose is stored in the
plant and only obtained
by eating the plant.
Photosynthesis
• Photosynthesis takes place in the chloroplast
of plant cells.
• Chlorophyll in the chloroplast make the plants
green because they don’t absorb the green
light.
Photosynthesis Light
Factors that affect Photosynthesis
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Amount of water
Light intensity
Temperature
pH
Amount of CO2
Cellular Respiration
• Aerobic = oxygen
• The process in which cells turn glucose into
energy for running cellular activities.
• Cells need glucose and oxygen and produce
carbon dioxide, water and energy.
• Cellular respiration equation
Cellular Respiration Results
• A total 36 ATPs are produced during the two parts of
of respiration
Photosynthesis & Respiration
• They complement each other as each ones
products are the materials are needed for the
other.
Anaerobic Respiration or Fermentation
• Anaerobic=without oxygen
• Fermentation takes place when oxygen is
available and energy is needed.
• Two types of fermentation
– Alcoholic—energy, alcohol and carbon dioxide are
the products
– Lactic Acid—energy and lactic acid are the
products (2 ATPs produced) Occurs in humans
when need more energy than oxygen breathed in.
Alcoholic Fermentation
• Yeast is used in alcoholic fermentation.
Energy is produced without oxygen.
Lactic Acid Fermentation
• Lactic Acid occurs when you exercise
strenuously and are unable to breathe in
enough oxygen.
• Lactic acid causes the muscles to hurt.