Notes over Photosynthesis

1. Let’s take some guided notes over
Photosynthesis
LT2.1

2. Draw the photosynthesis formula onto your notes sheet.
What are these things in the
formula? Let’s label them!
CO2 H2O Sunlight Glucose O2
Carbon
Dioxide
What are the common
names?
Water
Light
Energy
Sugar
(food)
Oxygen
REACTANTS Products

3. Sunlight
Water
Carbon
Dioxide
Glucose (sugar)
Oxygen
Photosynthesis is the
process by which the
energy of sunlight is
converted into the
energy of glucose.
Work with your shoulder
partner to decide which
reactants and products
go into the blanks on the
image to the right.
What is photosynthesis?

4. •Small pore called stomata open and close allowing
gases to leave and enter.

5. Why is photosynthesis important?
•Energy for living things comes from food.
•Energy in food comes originally from the sun.
Copy the
notes
and the
picture
Producers
Tertiary
Consumer
Secondary
Consumer
Primary
Consumer
• Organisms that do photosynthesis supply the entire
food chain with energy.

6. • Photosynthesis occurs in the chloroplasts of plants.
• Light absorbing compound is a pigment.
Looking Inside Photosynthesis
○ Pigments absorb
some wavelengths of
light and reflect
others (the color our
eyes see is the color
that the pigment
reflects)

7. •Chlorophyll is the pigment inside the chloroplast that
absorbs light for photosynthesis.
As the chlorophyll in
leaves decays in the
autumn, the green color
fades and is replaced by
the oranges and reds of
carotenoids.
Label this!
Chloroplast
(organelle)
Chlorophyll

8. What are the two main stages of photosynthesis?
• Light Reactions
○ Energy from
sunlight is
absorbed by
chlorophyll.
• Calvin Cycle
○ Carbon dioxide is
used to make
glucose.