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PHOTOSYNTHESIS What is the MAIN purpose of photosynthesis?
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PHOTOSYNTHESIS What is the MAIN purpose of photosynthesis? To make: GLUCOSE (food) Carbon + Hydrogen + Oxygen
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What organisms can make their own food?
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AUTOTROPHS (PRODUCERS) Example: Plants
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What organisms must obtain their food?
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HETEROTROPHS (CONSUMERS) Examples: Mushrooms, cows, bacteria, humans, fish, birds
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How is energy stored and released from ATP? Where is the chemical bond broken to release energy?
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How is energy stored and released from ATP? Where is the chemical bond broken to release energy? Energy is stored in chemical bonds and released when bond is broken between 2 nd & 3 rd Phosphate groups. 1 2 3
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Why is ATP compared to a battery?
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ATP contains energy like a battery ADP + P (Uncharged Battery) 2 phosphate groups has low energy ATP (Charged Battery) 3 phosphate groups has high energy
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What color wavelengths are best for photosynthesis?
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VIOLET & BLUE
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What is important about absorbed and reflected light?
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Absorbed Light is Used Light!!! Green is reflected by the green chlorophyll (pigment/ protein)
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Which kind of wavelength has more energy? Longer? or Shorter?
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Longer or Shorter Which kind of wavelength has more energy?
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What are pigments? What do pigments do?
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What are pigments? What do pigments do? Pigments are proteins! Pigments absorb light!
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What makes plants green?
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CHLOROPHYLL (Pigment)
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What are the 3 reactants in the photosynthesis chemical reaction? Hint: 3 things to make a plant grow
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Sunlight H₂O CO₂ What are the 3 reactants in the photosynthesis chemical reaction?
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What is the equation for photosynthesis? _____+ _____+ _____ → _______ + ___ REACTANTS → PRODUCTS
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What is the equation for photosynthesis? REACTANTS → PRODUCTS
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What is oxygen in the photosynthesis process?
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What is oxygen in the photosynthesis process? WASTE PRODUCT!!
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Scientists of Photosynthesis
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Intentionally left blank
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Who conducted the experiment that determined plant growth needed water and was important part of photosynthesis equation? CO2 + H₂O → Sunlight → C6H12O6 + O2
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Van Helmont Hint: “H” for H2O 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.
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Who conducted the experiment that determined plants release oxygen (O₂) and was an important part of the photosynthesis equation? CO2 + H₂O → Sunlight → C6H12O6 + O2
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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
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Who conducted the experiment that determined plants need sunlight and was an important part of the photosynthesis equation? Potato is used as the control
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Ingenhouz Hint: think “light house” 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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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
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Calvin Calvin came up with the Calvin Cycle and showed how plants take ATP and NADPH to change CO2 →C6H12O6 (glucose) CO2 + H2O → Sunlight → C6H12O6 + O2 GLUCOSE CO₂
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What is this organelle?
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Complete this diagram of photosynthesis
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C₆ H₁₂ O₂ (glucose) Thylakoids Light Dependent Reaction SUNLIGHT H₂O O₂ (waste product) CO₂ ATP NADPH Calvin Cycle Light Independent Reaction
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LIGHT DEPENDENT REACTION (NEEDS SUNLIGHT) WHY IS SUNLIGHT NEEDED?
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LIGHT DEPENDENT REACTION (NEEDS SUNLIGHT) WHY IS SUNLIGHT NEEDED? To break down (blow up) WATER (H2O) to make ATP & NADPH (energy)
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How is energy carried in ATP? How is energy carried in NADPH?
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How is energy carried in ATP? How is energy carried in NADPH? In the CHEMICAL BOND In the H+ and Electrons
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LIGHT INDEPENDENT REACTION (DOES NOT NEED SUNLIGHT) Where does Glucose C₆H₁₂O₆ get its carbon, hydrogen, and oxygen in the Calvin Cycle? Glucose C₆H₁₂O₆
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LIGHT INDEPENDENT REACTION (DOES NOT NEED SUNLIGHT) Where does Glucose C₆H₁₂O₆ get its carbon, hydrogen, and oxygen in the Calvin Cycle? CO₂ and NADPH Glucose C₆H₁₂O₆
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10 PGAL Where does the Calvin Cycle (Light Independent Reaction) take place? 2 PGAL 12 PGA RuBP 10 PGAL GLUCOSE CO₂ 12 PGAL CALVIN CYCLE
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10 PGAL Where does the Calvin Cycle (Light Independent Reaction) take place? 2 PGAL 12 PGA RuBP GLUCOSE CO₂ 12 PGAL 10 PGAL “The Stroma is the space where the cycle takes place.” CALVIN CYCLE
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10 PGAL Must know the flow of carbon molecules through the Calvin Cycle 2 PGAL 12 PGA RuBP 10 PGAL GLUCOSE CO₂ 12 PGAL CALVIN CYCLE
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PGAL RuBP PGA GLUCOSE C₆H₁₂O₆ CO₂ Must know the flow of carbon molecules through the Calvin Cycle Let’s simplify it!!! ATP & NADPH (Energy) CALVIN CYCLE
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10 PGAL 2 PGAL 12 PGA RuBP GLUCOSE CO₂ 12 PGAL How many times does the Calvin Cycle go around to make glucose (C₆H₁₂O₆)? 10 PGAL CALVIN CYCLE
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10 PGAL 2 PGAL 12 PGA RuBP GLUCOSE CO₂ 12 PGAL How many times does the Calvin Cycle go around to make glucose (C₆H₁₂O₆)? 10 PGAL CALVIN CYCLE
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