Ch. 6 Photosynthesis
Mrs. StewartHonors Biology
Central Magnet School
Notes 6.1 - Light Reactions
Page 113
Standards
•CLE 3210.3.3 Investigate the relationship between the processes of photosynthesis and cellular respiration.•SPI 3210.3.3 Compare and contrast photosynthesis and cellular respiration in terms of energy transformation.
Objectives
•Identify the reactants and products for the light cycle of photosynthesis
•Identify the location of the light cycle
Find a Partner
With your partner
1. Define autotrophs and heterotrophs, and give an example of each.
2. How is photosynthesis and energy related to each of those is number 1?
•Watch the video
•Answer the following questions:• What are the flowers doing?•Why are they doing it?
•Photosynthesis light reaction video
Photosynthesis Basics
Where does photosynthesis take place?
In organelles called chloroplasts.
Chlorophyll
•Chloroplasts contain the pigment known as chlorophyll
Pigments
•Absorb different wavelengths of light (colors)•Reflect (transmit) what they do not
absorb•We see what is reflected back.
The Visible Light Spectrum
Absorption of Light byChlorophyll a and Chlorophyll b
Dogs and Monkeys TogetherThink – pair - share
•Why are leaves (plants) green?
Light Reactions
Reactants:
Products:
Light in the form of photons, water,
NADP+, ADP, Phosphorous
ATP, NADPH, oxygen
What you need to know:
• Where do the light reactions occur?
• What is needed?
• What is created?
In the thylakoids that are inside chloroplasts.
Light (photons), water
ATP & NADPH go on to Calvin cycle; and oxygen that is released.
•Discovery – photosynthesis video
•Identify the reactants and products of the light cycle in the video•Identify the location of the light cycle in
the video
Objectives
•Identify the reactants and products for the light cycle of photosynthesis
•Identify the location of the light cycle
Standards
•CLE 3210.3.3 Investigate the relationship between the processes of photosynthesis and cellular respiration.•SPI 3210.3.3 Compare and contrast photosynthesis and cellular respiration in terms of energy transformation.
Notes 6.2
Calvin Cycle
Standards•CLE 3210.3.3 Investigate the
relationship between the processes of photosynthesis and cellular respiration.•SPI 3210.3.3 Compare and contrast
photosynthesis and cellular respiration in terms of energy transformation.
Objectives•Compare and contrast the light-
dependent and light-independent cycles of photosynthesis in terms of reactants and products
•Identify the location for the light-independent (Calvin cycle) for photosynthesis
Dogs•Tell your monkey where the reactions
of photosynthesis will occur in relation to a plant cell
Monkeys•Tell your dog the reactants for the
light– dependent reactions of photosynthesis
Dogs•Tell your monkey the products for the
light– dependent reactions of photosynthesis
Monkeys•Tell your dog where the light–
dependent reactions of photosynthesis occur - specifically
Where does it happen?•Two Stages:
• Light Cycle:
• Calvin Cycle:
Takes place in the thylakoid
Takes place in the stroma
Light-Dependent Cycle•Reactants:
•Products:
H2O and Light energy from the environment
NADP+ and ADP+ from the Calvin cycle.
O2 gas – released through stoma
ATP and NADPH – to Calvin cycle
Calvin Cycle
•Reactants:
•Products:
CO2 – from atmosphere
ATP & NADPH – from light cycle
Sugar & other monomers for macromolecules such as amino acids (proteins) and fatty acids (lipids)
Putting it all together
Making ConnectionsTogether
•How do the light-dependent and light-independent cycles of photosynthesis depend on each other?
Making ConnectionsTogether
•Look in your book on page 120 and find out what “carbon fixation” is.•Look up “nitrogen fixation” in your
glossary.•How are these two similar?
Stomata•Stomata (plural) stoma (singular):
Specialized cells that create a pore in the leaves that allow air (CO2, O2, water vapor) to come and go.
Diffusion in Action
With your partner – think/pair/share•Describe why plant cells may want to
close their stoma.
•Discovery – photosynthesis video
•Identify the reactants and products of the light-independent (Calvin) cycle in the video•Identify the location of the light-
independent (Calvin) cycle in the video
Objectives•Compare and contrast the light-
dependent and light-independent cycles of photosynthesis in terms of reactants and products
•Identify the location for the light-independent (Calvin cycle) for photosynthesis
Standards•CLE 3210.3.3 Investigate the
relationship between the processes of photosynthesis and cellular respiration.•SPI 3210.3.3 Compare and contrast
photosynthesis and cellular respiration in terms of energy transformation.
Exit Ticket•m.socrative.com•Room: stewart348
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