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Green River College: BIOL 100 Unit 3 Notes Latest Updated,100% CORRECT

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Green River College: BIOL 100 Unit 3 Notes Latest Updated Chapter 6: Energy for life Learning Objectives: 1. Identify the cellular structure where photosynthesis occurs and describe its function. 2. State the overall chemical equation for photosynthesis. 3. Recognize what is meant by the ter...

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  • March 21, 2023
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  • green river college biol 100 unit 3 notes latest updated
  • chapter 6 energy for life
  • chapter 7 energy for cells
  • chapter 8 cellular reproduction
  • chapter 9 meiosis and the genetic basis of sexual rep

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Green River College: BIOL 100 Unit 3 Notes Latest Updated
Chapter 6: Energy for life

Learning Objectives:
1. Identify the cellular structure where photosynthesis occurs and describe its function.
2. State the overall chemical equation for photosynthesis.
3. Recognize what is meant by the terms reduction and oxidation.
4. Describe the function of photosynthetic pigments.
5. Explain the flow of electrons in the light reactions.
6. Explain how ATP and NADPH are generated in the light reactions of photosynthesis.
7. Summarize the three stages of the Calvin cycle and describe the major
event that occurs during each stage.
8. Describe how ATP and NADPH are utilized in the reduction of CO2.
9. Summarize how the output of the Calvin cycle is used to make other carbohydrates.
10. Define C4 photosynthesis and explain why some plants must use this
type of photosynthesis.
11. Describe both the advantages and the disadvantages of C 4 photosynthesis
over C3 photosynthesis.
12. Compare and contrast the leaf structure of a C3 plant with that of a C4 plant.
13. Explain CAM photosynthesis and describe the conditions under which
plants can use it.


Producers convert Solar Energy to Chemical Energy


Photosynthesis:

• Transforms solar energy into chemical energy(carbohydrates)


• Producers—feed themselves and most of the consumers (most
other living organisms on Earth)

• Most food chains lead back to plants




UNIT 3 LECTURE NOTES 1

,• Producers are also called autotrophs - organisms that capture
energy and make organic molecules from inorganic nutrients


Examples of photosynthetic organisms:




UNIT 3 LECTURE NOTES 2

,Plant Anatomy

Epidermis: protective outer

layers Stomata: pores in the

epidermis Leaf vein: brings

water from roots

Mesophyll Cells: photosynthetic cells with

chloroplasts Chloroplasts - where photosynthesis

happens!


• Green portions carry on photosynthesis.



• Carbon dioxide enters leaves through small openings - stomata
• O2 diffuses out

• Roots absorb water, then water enters the leaf through leaf veins

• CO2 and H2O diffuse into mesophyll cells and then into chloroplasts



Chloroplasts – organelles that carry out photosynthesis

• Have a double membrane that surrounds the stroma –fluid

• Chloroplasts have their own DNA and ribosomes



Chloroplasts are packed with thylakoids (pancake-shaped structures) that
have chlorophyll molecules in their membranes
UNIT 3 LECTURE NOTES 3

, • Stacks of thylakoids are called grana

• Chlorophyll is a pigment that absorbs solar energy



Pigments are organic compounds that give plant and animal tissues color

• Pigments absorb solar energy

• Different pigments absorb and reflect different wavelengths of light




UNIT 3 LECTURE NOTES 4

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