1. Nicholas Boileau Despreaux
8/5/2019
Title: Biology 11/17/06
Objectives:
To learn about photosynthesis
Class Topics
Hand in W.S. 5.1 (DR/Quiz) before the bell rings
All classes except 1A
Review Chapter 4 Test
Review 5.1
Notes photosynthesis
"Honor is like an island, rugged and without a beach; once we have left it, we can never return."
Nicholas Boileau Despreaux
Monday, August 05, :04 AM

2. Class Assignments W.S. 5.1 (DR/Quiz) 11/17/06 Read 94-96 11/17/06
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Class Assignments
What
By When
W.S. 5.1 (DR/Quiz) 11/17/06
Read /17/06
Chapter 5 Quiz 1 11/21/06
Read /21/06
1A only W.S. 5.1 (DR/Quiz) 11/21/06
Due this class period
Due next class period
Due in the future

3. Grade Sheet 1A – SR p. 61 - 5 pts Measurement W.S. – 10 pts
8/5/2019
Grade Sheet
1A – SR p pts
Measurement W.S. – 10 pts
3A SR p. 42 – 6 pts
4A – SR p. 47 – 5 pts
2A – Measurement W.S. – 10 pts

4. Cellular Energy Adenosine = adenine + ribose
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Cellular Energy
Adenosine = adenine + ribose
ATP - adenosine tri(3)phosphate - used by the cell for energy
Energy currency
Energy stored in PO43- bonds
ADP - Adenosine Di(2)phosphate - used to regenerate ATP
Burning vs cellular respiration
Burning uncontrolled, is fast, releases much heat and light
cellular respiration controlled by 26+ enzymes, is slow, and releases less heat and no light

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ATP/ADP cycle

6. Terminology Autotroph Heterotroph Trophic levels Cellular respiration
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Terminology
Autotroph
Obtains energy from light
Heterotroph
Obtains energy from other sources
Trophic levels
Ex. Sun – plant – herbivore – carnivore
Cellular respiration
Process used to harvest energy from organic compounds
Photosynthesis
Process by which light energy is converted to chemical energy

7. Chapter 5 Quiz 1 Review ADP and ATP ATP/ADP cycle Energy in ATP
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Chapter 5 Quiz 1 Review
ADP and ATP
ATP/ADP cycle
Include all information
Energy in ATP
Heterotroph/Autotroph
Light, water, CO2 to make sugar?
Cellular respiration
Energy source for all living things
Food chain

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Photosynthesis
Taking light energy and changing it to chemical energy to make organic compounds
occurs in chloroplasts (only autotrophs)
Sun
The source for all living thing’s energy
6CO H20 C6H12O6 + 6O2
Different from book

9. Chloroplasts Site of photosynthesis Composed of:
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Chloroplasts
Site of photosynthesis
Composed of:
grana - stacks of thylakoids - contain pigment (chlorophyll)
site of light dependent reaction
stroma - the fluid around the grana
site of light independent reaction

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12. Light White light - spectrum of many colors and wavelengths ROYGBIV
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Light
White light - spectrum of many colors and wavelengths
ROYGBIV
Chlorophyll absorbs mostly blue and red light
Reflects green light

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15. Overview Light reaction (light dependent) - occurs in grana
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Overview
Light reaction (light dependent) - occurs in grana
Changes light energy to ATP and other high energy molecules
Dark Reaction (light independent) - occurs in stroma
Uses ATP and other high energy molecules to make sugar

16. Light Dependent Reaction
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Light Dependent Reaction
Light energy is absorbed by chlorophyll
Energy transferred to an electron
Electron must be replaced
Water split
2 H+, 2 e-, O

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18. Light Dependent Reaction
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Light Dependent Reaction
Energy from the excited electrons is transferred
Electron transport chain
Photosystem II
In grana
Makes ATP

19. Light Dependent Reaction
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Light Dependent Reaction
Photosystem I
The electrons are energized again (more light energy)
Energy is transferred to change NADP+ into NADPH
NADP+ is an electron carrier (takes the high energy electrons to the stroma for use in the light independent reaction
Nicotinamide adenine dinucleotide phosphate