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The Plant Kingdom (Part III) Kings of Photosynthesis.

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Presentation on theme: "The Plant Kingdom (Part III) Kings of Photosynthesis."— Presentation transcript:


2 The Plant Kingdom (Part III) Kings of Photosynthesis

3 Engage

4 Explore Begin Photosynthesis Lab Photosynthesis Foldable

5 Explain Autotrophs: biotic producers; photoautotrophs; chemoautotrophs; obtains organic food without eating other organisms Heterotrophs: biotic consumers; obtains organic food by eating other organisms or their by-products (includes decomposers)

6 Video 2

7 General Over View of Photosynthesis Sunlight 1. 6 CO 2 + 6 H 2 O ------------------> C 6 H 12 O 6 +6 O 2 Chlorophyll 2. Carried out in plants, algae, and some bacteria. 3. In plants and algae; chloroplasts. Bacteria; cytoplasm. 4. The process is broken down into two parts: a). Light reactions b). Dark reactions (Calvin Cycle).

8 Light Spectrum violetindigobluegreenyelloworangered 380nm450 nm 500 nm 550 nm 600 nm 650 nm 700- 750nm

9 Light Being Used Chlorophyll is the main pigment in the chloroplast. It is green and will reflect the green light. Plants use the violet- blue area of the spectrum the most. The orange - red area is used also used.

10 Absorption of Light by Chlorophyll a and Chlorophyll b VBGYOR Chlorophyll b Chlorophyll a Chlorophyll Light Absorption

11 The chloroplast Sites of photosynthesis Pigment: chlorophyll Plant cell: mesophyll Gas exchange: stomata Double membrane Thylakoids, grana, stroma

12 Chloroplast Light O2O2 Sugars CO 2 Light- Dependent Reactions Calvin Cycle NADPH ATP ADP + P NADP + Chloroplast Photosynthesis: An Overview

13 Video 3


15 Light Reactions This set of reactions needs sunlight and chlorophyll. They occur in the area of the chloroplast called the thylakoids. Sunlight hits and activates an area called the photosystem causing water molecules to split into H+ and O 2 The Oxygen leaves the cell, while the H+ are used to help create 2 high energy chemicals ATP and NADPH. These chemicals are sent to the stroma to be used in the Dark Reactions.


17 Dark Reactions They occur in the stroma of the chloroplast. This process does not need sunlight and can occur 24 hours a day. In this series of reactions the plant makes a chemical called PGAL from carbon dioxide and the energy from the ATP and NADPH. This PGAL is an intermediate compound that is raw material for all the materials a plant needs. The most common is sugar.

18 ChloropIast CO 2 Enters the Cycle Energy Input 5-Carbon Molecules Regenerated Sugars and other compounds 6-Carbon Sugar Produced Calvin Cycle

19 Summary This is a building process It requires water, carbon dioxide, sunlight, and chlorophyll. It produces sugar and oxygen.. The Light reaction produces oxygen and the needed materials for the Dark reactions. The Dark reactions produce PGAL from the carbon dioxide, ATP and NADPH. PGAL will be used to produce sugar and other materials.

20 Elaborate Finish Photosynthesis Lab Photosynthesis Concept Map Compare/Contrast Photosynthesis and Cellular Respiration

21 Photosynthesis includes of take place in takes place in uses to produce use Light- dependent reactions Calvin cycle Thylakoid membranes StromaNADPH ATP Energy from sunlight ATPNADPHO2O2 Chloroplasts High-energy sugars CO2 uses

22 Glucose Glycolysis Cytoplasm Pyruvic acid Electrons carried in NADH Krebs Cycle Electrons carried in NADH and FADH 2 Electron Transport Chain Mitochondrion


24 Evaluation

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