Ch. 6
Photosynthesis
Mrs. Stewart
Honors 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.
2.
Define autotrophs and heterotrophs, and
give an example of each.
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 by
Chlorophyll a and Chlorophyll b
Dogs and Monkeys Together
Think – pair - share
•Why are leaves (plants) green?
Light Reactions
Reactants:
Light in the form of photons, water,
NADP+, ADP, Phosphorous
Products:
ATP, NADPH, oxygen
What you need to know:
•
Where do the light reactions occur?
In the thylakoids that are inside chloroplasts.
•
What is needed?
Light (photons), water
•
What is created?
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 lightdependent and light-independent cycles
of photosynthesis in terms of reactants
and products
•Identify the location for the lightindependent (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:
Takes place in the thylakoid
• Calvin Cycle:
Takes place in
the stroma
Light-Dependent Cycle
•Reactants:
H2O and Light energy from the
environment
NADP+ and ADP+ from the
Calvin cycle.
•Products:
O2 gas – released through
stoma
ATP and NADPH – to Calvin
cycle
Calvin Cycle
•Reactants:
CO2 – from atmosphere
ATP & NADPH – from light cycle
•Products:
Sugar & other monomers for
macromolecules such as amino
acids (proteins) and fatty acids
(lipids)
Putting it all together
Making
Connections
Together
•How do the light-dependent and lightindependent cycles of photosynthesis
depend on each other?
Making
Connections
Together
•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 lightindependent (Calvin) cycle in the video
Objectives
•Compare and contrast the lightdependent and light-independent cycles
of photosynthesis in terms of reactants
and products
•Identify the location for the lightindependent (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