respiration (with review of photosynthesis)
DESCRIPTION
included fermentationTRANSCRIPT
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Respirationand
PhotosynthesisOCS Biology
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We’ll start this presentation with a review of photosynthesis and
chloroplasts. Then, we will go on to review respiration.
Photosynthesis and respiration are closely related: photosynthesis
produces energy, and respiration uses energy.
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Energy Producer of Cells: Chloroplasts
Remember learning about the chloroplasts? They are green. Plants have chloroplasts. Photosynthesis occurs in the chloroplasts.
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Equation for Photosynthesis
Carbon dioxide + water sugars + oxygenSunlight and chlorophyll are needed, too.
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Importance of Respiration
Respiration is a very important process for living things. It is how the energy we need for our daily lives is released from
the food we eat. Red blood cells take the oxygen we breathe from our lungs to our cells, and the mitochondria use
the oxygen to “burn” our digested food for energy.
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Two Types of Respiration
Aerobic respiration is respiration that requires oxygen.
Anaerobic respiration is respiration that does not require
oxygen.
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Equation for Aerobic Respiration
This is the equation for aerobic respiration. The reactants are on the left of the arrow. The
products are on the right of the arrow. Does it remind you of photosynthesis in any way?
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Powerhouses of Cells: Mitochondria
Remember learning about the mitochondria? We called them the powerhouses of cells. Aerobic
respiration occurs in the mitochondria.
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What about anaerobic respiration?
There are two types of anaerobic respiration. They are both called fermentation:
Lactic acid fermentation and
Alcohol fermentation
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Lactic Acid Fermentation
When our muscles get tired from exercising, lactic acid forms during anaerobic
respiration. Sometimes our muscles get sore.
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Alcohol Fermentation
Rising bread is an example of anaerobic alcohol fermentation.
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Foods Made By Fermentation
Anaerobic respiration called fermentation makes all of these foods possible.
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Let’s Review: Here’sComparison of
Aerobic and Anaerobic Respiration
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That’s Enoughabout respiration!
Now, breathe! Your respiration is aerobic . . .
The End