happy pachy- thursday use your word parts list to determine the meaning of: 1.photo 2.auto 3.chloro...
TRANSCRIPT
Happy Pachy- Thursday
Use your Word Parts List to determine the meaning of:1.Photo2.Auto3.Chloro4.Hetero5.Troph
Photosynthesis &
Cellular Respiration
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.
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.
Photosynthesis
• 6CO2 + 6H2O + light C6H12O6 + 6O2
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.
Photosynthesis in Action
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!!
• Chlorophyll is a molecule that absorbs light energy.
chloroplast
leaf cell
leaf
•chlorophyll is found in chloroplasts.
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
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)
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.
Stages of Cellular Respiration
– STAGE 1: Breaking down glucose• Glycolysis
– STAGE 2: Production of ATP• Krebs Cycle• Electron Transport Chain (ETC)
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
mitochondrion
animal cell
Anaerobic Respiration
• Lactic Acid Fermentation– Muscle soreness
• Alcoholic Fermentation– Done by yeast and fungus– Prepares food and beverages
What’s the Point?
• The net gain from aerobic respiration is up to 34 ATP!!!!
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!!!
• The reactants in photosynthesis are the same as the products of cellular respiration.
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