Cell Energy
Photosynthesis vs Cell Respiration
1 Minute Quick Write
What do plants need naturally
to survive?
Notice the illustrations of the plant leaf below.
What plant cell organelle do you recognize?
Chloroplast
• Chloroplasts are present in
plant cells.
• They capture the light
energy from the sun and
convert it into chemical
energy (food molecules
called glucose, C6H12O6).
• That process is called
Photosynthesis
Let’s figure out the equation for
Photosynthesis?
According to the chloroplast
diagram to the left….
• What is the chloroplast taking in
(the reactants)?
The same as what we said plants need to survive
Glucose
(C6H12O6 )
• What is the chloroplast producing
or giving off (the products)?
Use your manipulatives to create the
equation for photosynthesis
(Place the correct name of the molecule below it in the equation and
make sure your equation is balanced using the correct coefficients)
Reactants
Products
Write out your correct balanced equation of photosynthesis.
Does your equation look like the
one below?
Check your understanding
Explain the process of Photosynthesis to
a neighbor using the following terms :
carbon dioxide
glucose
oxygen
process
chloroplast
light energy
food
gas
water
plants
Write out your explanation using the above terms.
Think Pair Share
There is a saying “If you talk to a
plant, the plant will grow”
Explain, to a neighbor, how the
phrase above is relevant and what
process is taking place.
Acrostic
Write a word for each letter of the word photosynthesis that relates to the topic
P
H
O
T
O
S
Y
N
T
H
E
S
I
S
Cellular Respiration
Review of Photosynthesis
Before we go into cellular respiration, let’s
review what happens in the process of
photosynthesis.
(use the words of your manipulative)
Let’s take a look at
how plants and other cells use the
glucose that is produced.
Energy is packaged in glucose during the process of
photosynthesis. However, the glucose molecule is
bound together. Do you think cells can use this glucose
in its current form?
No
So what has to happen to the glucose, if it is bound
together, in order for cells to use it?
The bond has to be broken and a more useable form
of energy should be produced.
GLUCOSE
( C6H12O6 )
GLUC
( C6H
OSE
12O6 )
GLUC
( C6H
OSE
12O6 )
GLUC
( C6H
OSE
12O6 )
ENERGY
ATP
(Adenosine Triphosphate)
If glucose is used and energy in the form of
ATP is produced, in which cell organelle do
you think cellular respiration takes place?
mitochondria
What types of cells have mitochondria?
animal cells, plant cells, fungus cells & protist
cells
Mitochondria
• Mitochondria convert
chemical energy stored in
food molecules (glucose,
C6H12O6 ) into energy
(ATP) that is more
convenient for the cell to
use.
• This process is called
Cellular Respiration
Now we are going to build our
equation for Cellular Respiration
using the same manipulative.
Manipulative
Place your arrow in the center of the equation.
What do we start the reaction with?
If glucose is being used and energy in the form of
ATP is produced, place those two word pieces of
your manipulative on the correct side of the arrow.
Place the remaining word pieces on the side of the
equation you think they should go.
Does your Cellular Respiration
formula look like this one?
What will the cell use the ATP for?
C6H12O6 + 6O2
6CO2 + 6H2O + ATP
(energy for the cell to
use for other processes)
Name some specific process of the cell.
In your own words, explain what you
think this analogy is saying?
Check your understanding
Why do you think cells under go the process
of cellular respiration?
Explain the process of cellular respiration
using the following terms:
carbon dioxide
glucose
oxygen
process
Mitochondria
food molecules
cells
gas
ATP
water
Going further into
Cellular Respiration
Complete the following chart
Description of Process
Reactants
Products
Photosynthesis
Cellular
Respiration
What do you notice about the reactant and products of
cellular respiration in comparison to the reactant and
products of photosynthesis?
Exit Ticket