1. The Plant Kingdom (Part III)
Kings of Photosynthesis

2. Engage

3. Explore
Begin Photosynthesis Lab
Photosynthesis Foldable

4. 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)

5. Video 2

6. General Over View of Photosynthesis
Sunlight
1. 6 CO2+ 6 H2O > C6H12O6 +6 O2
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).

7. Light Spectrum violet indigo blue green yellow orange red 380nm 450 nm
600 nm
650 nm

8. 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.

9. Chlorophyll Light Absorption
Absorption of Light by
Chlorophyll a and Chlorophyll b
Chlorophyll b
Chlorophyll a V B G Y O R

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

11. Photosynthesis: An Overview
Light O2
Sugars
CO2
Chloroplast
Chloroplast
NADP+
ADP + P
Light-
Dependent
Reactions
Calvin
Cycle
ATP
NADPH

12. Video 3

14. 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 O2
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.

16. 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.

17. Calvin Cycle CO2 Enters the Cycle Energy Input ChloropIast 5-Carbon
Molecules
Regenerated
6-Carbon Sugar
Produced
Sugars and other compounds

18. 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.

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

20. CO2 Photosynthesis Light- dependent reactions Calvin cycle Thylakoid
includes
uses
Light-
dependent
reactions
Calvin cycle
takes place in
uses
use
take place in
Thylakoid
membranes
Stroma
NADPH
ATP
Energy from
sunlight
to produce of
to produce
ATP
NADPH O2
Chloroplasts
High-energy
sugars

21. Electron Transport Chain
Glucose
Glycolysis
Cytoplasm
Pyruvic acid
Electrons carried in NADH
Krebs Cycle
Electrons carried in NADH and FADH2
Electron Transport Chain
Mitochondrion

23. Evaluation