Warm-up
1. How do living things get the energy they need?
2. What organelle is only in plant cells and uses
sunlight to make food for plants?
3. What do you know about photosynthesis?
Agenda
 Objectives:
SWBAT: Identify the reactants and products in
photosynthesis
SWBAT: Explain why photosynthesis is so
important photosynthesis
 Notes
 Activity
 Note card Equations
 Exit Ticket
Where does the energy that living
things need come from ?
 Food!
 The energy that we
get from food
originally comes from
the sun.
What are organisms called that can
make their own food?
 Autotrophs – organisms that can make their
own food using sunlight.
 Other organisms, like animals, cannot use the
sun’s energy directly. These organisms are
called heterotrophs.
 Heterotrophs have to consume food to get
energy.
What is another word for
Autotrophs?
 Autotrophs are also called Producers
because they produce their own food.
Think about when you go to Walmart or a grocery store,
the vegetables and fruit are often in the PRODUCE
section.
What is another word for
Heterotrophs:
Heterotrophs are also called consumers
because they must consume other
organisms in order to obtain energy.
Name the type of organism!
Heterotroph on right side,
Autotroph on the left side
Everybody up!
Autotroph or Heterotroph?
Autotroph or heterotroph?
Autotroph or Heterotroph?
Autotroph or Heterotroph?
Autotroph or Heterotroph?
Autotroph or Heterotroph?
Autotroph or Heterotroph?
Autotroph or Heterotroph?
How do plants make their own food?
 Autotrophs use the process of
photosynthesis to make their food.
 Photosynthesis is when plants use sunlight
to convert water and carbon dioxide into
oxygen and glucose.
How does Photosynthesis work?
In addition to water and carbon dioxide,
photosynthesis also requires light and
chlorophyll
Chlorophyll is a pigment in chloroplasts.
Inside the Chloroplasts
 Chlorophyll is the part
of the plant that gives
plants their green color.
 Chlorophyll absorbs
the sunlight to make
usable energy for
plants.
 Where is chlorophyll
found?
The equation for Photosynthesis:
Copy the equation down!
Carbon dioxide + Water  Glucose + Oxygen
The equation for Photosynthesis:
 Reactants are the starting materials for a
reaction. Products are what we get at the end
of a reaction.
 What are the reactants of photosynthesis?
 What are the products of photosynthesis?
NOTE CARD EQUATIONS
Photosynthesis Diagram
Why is photosynthesis so
important?
Why is photosynthesis important?
We are dependent on the process!
 Nearly all life on Earth depends on photosynthesis
as a source of energy.
 We need the oxygen to survive and the plants
to eat!
Exit Ticket
Directions: Get out a half sheet of paper and answer the following
questions. Remember your name, date and the period at the top!
1. Do heterotrophs or autotrophs use the
process of photosynthesis to make food?
2. Is a mouse an example of an autotroph or a
heterotroph?
3. What are the products of photosynthesis?
Warm-Up
1. Carbon dioxide and water are the
____________ of photosynthesis.
2. What do we call the end result after a chemical
reaction?
3. What are two ways that animals depend on
photosynthesis?
Agenda
 Objectives: SWBAT Identify the reactants and products
in photosynthesis AND SWBAT describe the process of
Cellular Respiration.
 Photosynthesis Rap
 Note card equation practice
 Start Cellular Respiration
 Exit Ticket
Rap
http://www1.teachertube.com/viewVideo.p
hp?title=Photosynthesis&video_id=62625
Review
1. What is the equation for photosynthesis?
2. What does photosynthesis produce?
What is Cellular Respiration?
 Cellular respiration is the process that
releases energy by breaking down food
molecules in the presence of oxygen

The equation for cellular respiration is:
 C6H12O6 + 6O2 -----------> 6CO2 + 6H2O

What do you notice about this equation?
 It’s the photosynthesis equation backwards!
Cellular Respiration Equation
 What are the reactants of the equation (in
words and in molecular formula)?
 C6H12O6 + 6O2
 Glucose and Oxygen
 What are the products of the equation (in
words and in molecular formula)?
 6CO2 + 6H2O
 Carbon dioxide and Water
Where does Cellular Respiration take
place in a cell?
 The mitochondria!
 Remember that the
mitochondria breaks
down sugars to make
energy for the cell to
use.
1
mitochondrion
ATP
and
6CO 2
energy
2
3
energy from
glycolysis
and
6O 2
inner membrane
ATP
and
6H 2O
4
Cellular Respiration Diagram
What organisms go through cellular
respiration?
 Plants and animals go through cellular
respiration.
 If an organism has mitochondria in its cells, then
it goes through cellular respiration.
What is another term for Cellular
Respiration?
 Another name for Cellular Respiration is
Aerobic Respiration because the
process requires oxygen.
 Think Aerobic exercise. You have to take in
oxygen to do aerobics.
Note card Equations
What is the relationship between
photosynthesis and cellular respiration?
The reactants in photosynthesis are the products of cellular
respiration.
Energy!
 Energy comes in many forms – light, heat,
electricity, oil, etc.
 Cells use adenosine triphosphate, or ATP, to
store and release energy .
What is ATP made of?
 ATP is made of an adenine,
a 5-Carbon sugar called
ribose, and 3 phosphate
groups.
 The 3 phosphate groups are
key to ATP’s ability to store
and release energy.
How is the energy released from ATP?
 When the chemical bond in ATP is broken
between the 2nd and 3rd phosphates, energy is
released.
Exit Ticket
1. A lot of trees are chopped down every
year in rainforests. Why is this a problem
for us given photosynthesis and cellular
respiration?
White Board Practice!
Directions:
You may only write the answers to the
questions on the white board
If you use the white board to write notes,
profanity, or to draw then you will lose the
right to use the white board
What is the
waste
product in
this picture?
WRITE OUT THE REACTANTS
FOR PHOTOSYNTHESIS IN
WORDS
WRITE CARBON DIOXIDE AND
WATER AS THEY APPEAR IN
THE EQUATION
WRITE OUT THE PRODUCTS FOR
PHOTOSYNTHESIS IN WORDS
DO PEOPLE GO THROUGH
PHOTOSYNTHESIS OR
CELLULAR RESPIRATION?
GLUCOSE AND OXYGEN ARE
THE REACTANTS OF WHICH
PROCESS: PHOTOSYNTHESIS OR
CELLULAR RESPIRATION?
WRITE OUT THE PRODUCTS
OF CELLULAR RESPIRATION
IN WORDS
What is the green pigment in
chloroplasts?
WRITE OUT THE REACTANTS OF
CELLULAR RESPIRATION IN
SYMBOLS
WHERE DOES CELLULAR
RESPIRATION TAKE PLACE IN
THE CELL?
EXIT TICKET !
Exit Ticket
1. How is cellular respiration related to
photosynthesis? (Think about the equations)
2. In which organelle does cellular respiration
occur?
3. Which process do we go through,
photosynthesis or cellular respiration? How do
we know?
Warm-Up
1. What is another name for cellular
respiration?
2. Hundreds of acres of rainforests are
disappearing every year. Why is this such
a big problem? Answer in complete
sentences.
Agenda
 Objective: SWBAT Explain why alcoholic fermentation
and lactic acid fermentation are types of anaerobic
respiration.
 Video
 Notes
 Yeast Demonstration
 Study Guide
Yeast Demonstration
BrainPop video
What is an Anaerobic Process?
 Anaerobic Respiration is a process
that does NOT require oxygen to take
place.
Fermentation
• An anaerobic process that only releases 2 ATP
molecules of energy.
Copy this chart in your notebook!
Aerobic
Total amount of
energy produced
Products
Is Oxygen used?
36 ATP
Anaerobic
2 ATP
CO2 and H2O Lactic Acid/Alcohol
and CO2
Yes
No
Types of Fermentation
Lactic Acid
Occurs in your muscle cells
During rapid exercise, the
body cannot get enough
oxygen to the muscles to
produce ATP.
This causes a painful,
burning sensation from the
release of lactic acid
Types of Fermentation
Alcoholic
The carbon dioxide released
as waste causes bread dough
to puff up and rise
Also used in the production of
dairy products
Cheese
Milk
yogurt
Yeast Demonstration
Review
Pass out Study Guides
Warm-up
1. Mark 3 questions on your study guide that
you want to go over before taking the quiz
2. Write the equation for photosynthesis
3. Write the equation for cellular respiration
(Remember, you must know both equations
by heart for the quiz)
Agenda
Note card equations
Go over study guide
Take quiz
Hand out missing work info and show
current grades
Mini survey- return to me
Planet Earth
Mini Survey
Please answer these questions sincerely and hand them
into me before you leave.
1. What is something that we’re doing already that’s
helpful to you? (Notes, Exit Tickets, PowerPoints,
videos, etc.)
2. What are some things that I could do to help you
learn the material better?
3. What are some things YOU could do (individually or
as a class) to help you learn the material?