happy pachy- thursday use your word parts list to determine the meaning of: 1.photo 2.auto 3.chloro...
TRANSCRIPT
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Happy Pachy- Thursday
Use your Word Parts List to determine the meaning of:1.Photo2.Auto3.Chloro4.Hetero5.Troph
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Photosynthesis &
Cellular Respiration
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More talk about food…
• “-troph” means nutrition or feeding
• Autotrophs/Producers- Use energy from sunlight to make food. (Photosynthesis)
• Auto- means “self”– Autotrophs make their own food.
• Heterotrophs/Consumers- Get energy from food. (Cellular Respiration)
• Hetero- means “different”– Heterotrophs consume food from others.
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Mmmm… Food!!
• Where do we get our energy?
• How does the play a role in our energy?
• Photosynthesis- the process by which light energy is converted to chemical energy.
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Photosynthesis
• 6CO2 + 6H2O + light C6H12O6 + 6O2
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Location, Location, Location•Photosynthesis takes place in the chloroplasts of plant cells.
•Pigments for photosynthesis are in the membranes of the disk shaped structures called thylakoids.
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Photosynthesis in Action
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Chlorophyll… Don’t you mean Bore-a-phyll?!?!?
• Pigment- structures that contain light-absorbing substances.– Pigments absorb some colors and reflect
others.
• Chlorophyll- the main pigment involved in photosynthesis. – Absorbs blue and red light– Reflects green and yellow light
• The reflection makes plants look GREEN!!
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• Chlorophyll is a molecule that absorbs light energy.
chloroplast
leaf cell
leaf
•chlorophyll is found in chloroplasts.
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Back to Food…• Breakin’ it down
• Organisms need protein, carbohydrates, and fats. They need to be broken down to release energy.
• To use this energy – we need to transfer the energy into ATP.
• This process is cellular respiration.
• C6H12O6 + 6O2 6CO2 + 6H2O + ATP
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ATP• ATP- adenosine triphosphate
• Energy is released when the bonds between the phosphates are broken.
• When the phosphate breaks off the new molecule is known as ADP (adenosine diphosphate)
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Anaerobic vs. Aerobic
• Breaking down food WITHOUT oxygen present is known as anaerobic respiration.– Anaerobic means “without air”– PRODUCT: lactate or ethanol and
carbon dioxide.
• Breaking down food WITH oxygen present is known as aerobic respiration.– PRODUCT: Large amounts of ATP.
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Stages of Cellular Respiration
– STAGE 1: Breaking down glucose• Glycolysis
– STAGE 2: Production of ATP• Krebs Cycle• Electron Transport Chain (ETC)
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Location, Location, Location
• Where does this all occur?– In eukaryotes cellular respiration occurs
in the powerhouse of the cell.– What is the powerhouse of the cell?
• In prokaryotes it occurs in the cell membrane
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mitochondrion
animal cell
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Anaerobic Respiration
• Lactic Acid Fermentation– Muscle soreness
• Alcoholic Fermentation– Done by yeast and fungus– Prepares food and beverages
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What’s the Point?
• The net gain from aerobic respiration is up to 34 ATP!!!!
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Coincidence?!?!?• Look at both the photosynthesis and
cellular respiration equations… What did you notice????Photosynthesis
6CO2 + 6H2O + light C6H12O6 + 6O2
Cellular Respiration
C6H12O6 + 6O2 6CO2 + 6H2O + ATP
• WEIRD!!!
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• The reactants in photosynthesis are the same as the products of cellular respiration.
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It’s All About the Light•Did you know the sun gives off a “ray” of colors – not just one!
•All colors of ROY G BIV are in light.
R-redR-red
O-orangeO-orange
Y-yellowY-yellow
G-greenG-green
B-blueB-blue
I-indigoI-indigo
V-violetV-violet