Transcript Photosynthesis

Bell Work:
Diffusion Lab Questions
1. The plastic bag is semipermeable to which
substance?
2. Why did the iodine enter the bag?
3. Why didn’t the starch enter the beaker?
4. How is the plastic bag like the cell membrane?
5. What is the definition of the word “diffusion”?
Cell Energy

Make a list of the reasons why a cell might need
energy.
Photosynthesis &
Cellular Respiration
Chapter 3, section 2
Chapter 7, section 1
Continuing with the
movement of
particles into and out
of cells
What is photosynthesis?
____________
Photosynthesis is the
process by which plants
make their own food.
The word photosynthesis
means – combine with
_______
or _______
by
made
light
light.
Where does photosynthesis occur?
Photosynthesis occurs in the
________
leaves of a plant. More
specifically- in the ___________.
chloroplasts
Plant Cell

Chloroplast
are
organelles
in a plant
cell.
Inside of the chloroplast
 _____________
Chlorophyll is
found in the
chloroplasts.
 Chlorophyll is the
___________
pigment that
makes the plant
_________.
green
 Chlorophyll
__________
absorbs light
energy.
Photosynthesis needs and products:
Plants use the ______
light energy captured
by chlorophyll to change carbon
______ dioxide
______
and _______
water to food.
The food is in the form of a sugar called
__________
(C6H12O6).
glucose
Photosynthesis also produces ________.
oxygen
How does photosynthesis help
us?
During the process of photosynthesis,
oxygen is produced. We use this
oxygen to breathe. We also receive
energy from the plant when we eat
plants.
Reactants vs. Products
 Reactants are what you need to make
something- The reactants for photosynthesis
are Sunlight, Carbon Dioxide and Water.
 Products are what you make- The products
for photosynthesis are Glucose (sugar) and
Oxygen.
EQUATION FOR
PHOTOSYNTHESIS
Photosynthesis Video
Photosynthesis and Cellular Respiration
 Cellular respiration is a chemical reaction
that occurs in cells.
 During cellular respiration, cells use oxygen
to produce energy from food.
 Food (glucose) is broken down into CO² and
H O, and energy is released.
²
 The released energy is used to maintain body
temperature in animals. It is also used to
form ATP, which supplies energy that fuels
cell activities.
EQUATION FOR
RESPIRATION
The Connection Between Photosynthesis and Respiration
Reactants vs. Products
 Reactants are what you need to make
something- The reactants for cellular
respiration are Glucose (sugar) and
Oxygen.
 Products are what you make- The products
for cellular respiration are Carbon Dioxide,
Water and ATP.
Alternative to Cellular Respiration
 Fermentation produces ATP without using
oxygen. It can occur in muscles when they
are unable to get oxygen for respiration.
 Fermentation also produces lactic acid. This
acid can cause muscle fatigue.
Scientist Notebook Drawings
 Draw the Carbon Dioxide/Oxygen Cycle pg. 84:
Draw a plant to represent the plant cell
Draw an animal to represent the animal cell
Draw arrows with chemical formulas
Draw the sun with arrow
Draw ATP with arrow
Include Photosynthesis and Respiration
explanations
 Draw, color, and label figure 2 on pg. 185.