photosynthesis

PHOTOSYNTHESISWhat is the purpose of photosynthesis?

To make:GLUCOSE (food)

Carbon + Hydrogen + Oxygen

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What make their own food?AUTOTROPHS (PRODUCERS)

Example: Plants

What have to obtain their food?HETEROTROPHS (CONSUMERS)

Examples: Mushrooms, cows, bacteria, humans, fish, birds

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http://www.thedrinksbusiness.com/2012/05/bacteria-not-blending-brings-complexity/

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)

Why is green light not good for photosynthesis?

Green is not absorbedIt is reflected by the green

chlorophyll (pigment/protein)

Absorbed light is useable light!

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What are pigments?Pigments are proteins!

What do pigments do?Pigments absorb light!

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?

• Sunlight• H₂O• CO₂

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What is the equation for photosynthesis?

REACTANTS → PRODUCTS

Van HelmontCO2 + 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.

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

Ingenhouz (Think: “Lighthouse”)

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

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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

SUNLIGHT

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H₂OSUNLIGHT


H₂OSUNLIGHT

Thylakoids


H₂OSUNLIGHT

Thylakoids

O₂ (waste product)


H₂OSUNLIGHT

Thylakoids

ATP



H₂OSUNLIGHT

Thylakoids

ATP

NADPH



H₂OSUNLIGHT

Thylakoids

ATP

NADPH

CO₂



H₂OSUNLIGHT

Thylakoids

ATP

NADPH

Calvin Cycle

CO₂



H₂OSUNLIGHT

Thylakoids

ATP

NADPH

Calvin Cycle

CO₂

C₆ H₁₂ O₂ (glucose)



Light Dependent Reaction Light Independent Reaction

Calvin Cycle

Pow

er

POWER

Same N

ame

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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

Stroma

photosynthesis

Documents

green light

useable light

plants green

nadph atp

purpose of photosynthesis

priestly think

things reactants

phosphate bond breaks