Embed Size (px)
Citation preview
PHOTOSYNTHESIS
What is the purpose of photosynthesis?
PHOTOSYNTHESISWhat is the purpose of photosynthesis?
To make:GLUCOSE (food)
Carbon + Hydrogen + Oxygen
What make their own food?
What make their own food?AUTOTROPHS (PRODUCERS)
Example: Plants
What have to obtain their food?
What have to obtain their food?HETEROTROPHS (CONSUMERS)
Examples: Mushrooms, cows, bacteria, humans, fish, birds
How is energy released from ATP?
Where is the chemical bond broken to release energy?
How is energy released from ATP? Phosphate Bond Breaks
Where is the bond broken to release energy:
At the bond between 2nd & 3rd
Phosphates
ATP contains energy like a battery
ADP + P (Uncharged Battery) ATP (Charged Battery)
What color wavelength is best for photosynthesis?
What color wavelength is best for photosynthesis?
BLUE
Absorbed Light is
Used Light
Why is green light not good for photosynthesis?
Why is green light not good for photosynthesis?
Green is not absorbedIt is reflected by the green
chlorophyll (pigment/protein)
Which wavelengths have more energy?
Longer?
or
Shorter?
Which wavelengths have more energy?
Longer
or
Shorter
What are pigments? What do pigments do?
What are pigments? What do pigments do?
Pigments are proteins!Pigments absorb light!
What makes plants green?
What makes plants green?CHLOROPHYLL (Pigment)
What 3 things do I need to make my flower grow which are the same 3 things(reactants) needed for photosynthesis?
What 3 things do I need to make my flower grow which are the same 3 things (reactants) needed for photosynthesis?
• Sunlight• H₂O• CO₂
What is the equation for photosynthesis?
_____+ _____+ _____ → _______ + ___
Use this to help you….
REACTANTS → PRODUCTS
What is the equation for photosynthesis?
REACTANTS → PRODUCTS
What is oxygen in the photosynthesis process?
What is oxygen in the photosynthesis process? WASTE PRODUCT!!
Scientists Who Helped Develop the Photosynthesis Equation…
Intentionally left blank
Who conducted the experiment that determined plant growth needed water and was important part
of photosynthesis equation?
Van Helmont
CO2 + H₂O → Sunlight → C6H12O6 + O2
Van Helmont’s experiment concluded that the plant must have gotten its additional mass from H2O since that was
all that the plant received.
Who conducted the experiment that determined plants release oxygen (O₂) and was an important
part of the photosynthesis equation?
Priestly(Think: Priests put candles in churches)
Priestly found the plant released OXYGEN from his experiment keeping mouse and flame alive.
CO2 + H2O → Sunlight → C6H12O6 + O₂
Who conducted the experiment that determined plants need sunlight and was an important part of
the photosynthesis equation?
Ingenhouz (“I” for light)
Ingenhouz repeated Priestly’s experiment but tried it with and without sunlight to see if that was necessary. He found sunlight was an important part of photosynthesis.
CO2 + H2O → Sunlight → C6H12O6 + O2
Who conducted the experiment that determined that photosynthesis had a cycle that created glucose from CO₂ and
was an important part of the photosynthesis equation?
?
GLUCOSE
CO₂
Calvin
Calvin came up with the Calvin Cycle and showed how plants take ATP and NADPH to change CO2 →C2H12O6 (glucose)
CO2 + H2O → Sunlight → C6H12O6 + O2
GLUCOSE
CO₂
What is this organelle called?
H₂OSUNLIGHT
Thylakoids
O₂ (waste product)
H₂OSUNLIGHT
Thylakoids
O₂ (waste product)
?
H₂OSUNLIGHT
Thylakoids
ATP
O₂ (waste product)
H₂OSUNLIGHT
Thylakoids
ATP
?
O₂ (waste product)
H₂OSUNLIGHT
Thylakoids
ATP
NADPH
O₂ (waste product)
H₂OSUNLIGHT
Thylakoids
ATP
NADPH
?
O₂ (waste product)
H₂OSUNLIGHT
Thylakoids
ATP
NADPH
CO₂
O₂ (waste product)
H₂OSUNLIGHT
Thylakoids
ATP
NADPH
?
CO₂
O₂ (waste product)
H₂OSUNLIGHT
Thylakoids
ATP
NADPH
Calvin Cycle
CO₂
O₂ (waste product)
H₂OSUNLIGHT
Thylakoids
ATP
NADPH
Calvin Cycle
CO₂
?O₂ (waste product)
H₂OSUNLIGHT
Thylakoids
ATP
NADPH
Calvin Cycle
CO₂
C₆ H₁₂ O₂ (glucose)
O₂ (waste product)
Light Dependent Reaction Light Independent Reaction
Calvin Cycle
Pow
er
POWER
Same N
ame
Electron Transport Chain takes place in the Thylakoid Membrane
Light blows up H₂O into H⁺ and е⁻ to help make NADPH & ATP:
energy that fuels the Calvin Cycle
Electron Transport Chain
Glucose
10 PGAL
Where does the Calvin Cycle (Light Independent Reaction) take place?
2 PGAL
12 PGARuBP
GLUCOSE
CO₂
12 PGAL
10 PGAL
Where does the Calvin Cycle (Light Independent Reaction) take place?
2 PGAL
12 PGARuBP
GLUCOSE
CO₂
12 PGAL
Stroma
10 PGAL
2 PGAL
12 PGARuBP
GLUCOSE
CO₂
12 PGAL
How many times does the Calvin Cycle go around to make glucose (C₆H₁₂O₆)?
How many times does the Calvin Cycle go around to make glucose (C₆H₁₂O₆)?
2 PGAL
12 PGARuBP
GLUCOSE
CO₂
2 PGAL’S COMBINE TO FORMGLUCOSE
12 PGAL10 PGAL
