NAME: _____________________________ DATE: _____________
PERIOD: ______________
Unit 1.2 Photosynthesis / Cellular Respiration
Learning Objectives TEKS 7.8A,B 7.12B
 Discuss Potential vs. Kinetic Energy
 Describe Photosynthesis and Cellular Respiration
 Compare and Contrast Producers and Consumers and how they interrelate
Vocabulary
1. Potential Energy
2. Kinetic Energy
3. Photosynthesis
4. Producer / Autotroph
5. Cellular Respiration
6. Consumer / Heterotroph
Potential vs. Kinetic Energy
 ___________________ - energy that an object has due to its position, shape, or
condition …in another words, energy that is at rest or _______________
 ___________________ - the energy of motion
 Keep these concepts in mind as we discuss how living systems convert energy
for storage and eventual usage in the next few moments…
What is Photosynthesis
 __________________ is the process by which some organisms (plants) use sunlight,
carbon dioxide, and water to produce ______________ (sugar) and ______________
 Chemical Equation:
6CO2 + 6H2O
Carbon dioxide
+ Water
 C6H12O6 + 6O2

Glucose
+ Oxygen gas
Where does it take place?
 Photosynthesis takes place in plant cells that contain specific molecules called
__________________ that absorb light
 Chlorophyll is a __________ pigment molecule that is produced within the
__________________ of plant cells
 Chlorophyll captures ___________ light, then the plant cells use that energy to drive
photosynthesis
 Chloroplasts are structures within the plant cell that produces _________________
NAME: ________________________ DATE:_______________ PERIOD: ____________
How does it happen?
 Carbon dioxide gas and water enter the leaf and ___________systems and go directly
into the plant cell
 Light from the sun is captured by the ________________which is produced by the
chloroplasts in the plant cell
 Through a ____________ ____________, the carbon dioxide and water are broken
down and new compounds are formed…____________ (sugar) and ___________ gas
 Plants use Glucose as ____________ or “food” that the plant then stores as energy
and drives plant growth
 _____________ gas is released as a by-product and exits through the stomata
 In another words, ___________________is where plants change light energy to
stored ______________or food energy.
 ________________ or _________________: organism that makes its own food
What is Cellular Respiration?
 ________________________ is the breakdown of food and its change into energy
through the use of Oxygen
 Chemical Equation:
C6H12O6 + 6O2 
6CO2
+
6H2O +
ATP
_________ + ________  _______ + _______ + __________
Where does it take place?
 Cellular Respiration takes place in the ___________________of the cell
 The Mitochondria are _________________ structure inside the cell that are
responsible for _______ (Adenosine Tri-phosphate or energy) production.
 Often called the “__________________ of the Cell”
NAME: ________________________ DATE:_______________ PERIOD: ____________
How does it happen?
 In organisms, including humans, the ___________ of stored energy, is the reverse
process of Photosynthesis.
 Glucose (C6H12O6 - sugar) in the presence of Oxygen gas (O2) breaks down into
Carbon dioxide (CO2 ) and water (H2O) and releases stored energy. Look familiar?
Cellular Respiration
C6H12O6 +
6O2

6CO2
+
6H2O
+
Photosynthesis
6CO2 + 6H2O
 C6H12O6 +
6O2
 Glucose and oxygen enter the _____________ and after several chemical processes,
the ___________ and __________ is broken down or converted into __________
__________ and ___________.
 As a bonus, _________ is also produced providing ___________ for the cell
 ________________ or ________________ - organisms that eat producers or other
organisms for energy
Factoid: __________________
 Fermentation is the breakdown of ___________ without the presence of __________
 In human muscle tissue, notice the amount of nuclei present. Now think about the
massive amounts of __________________ present in muscle tissue…powerhouse of
the cell.
 What happens when you exercise and don’t get enough Oxygen?
 When glucose stored in the muscle begins to be used up, without the presence of
enough oxygen, a substance call _________ acid forms, causing muscle tiredness.
NAME: ________________________ DATE:_______________ PERIOD: ____________
Overview:
ATP
CO2 + H2O
P
H
O
T
O
S
Y
N
T
H
E
S
I
S
C6H12O6 + O2
C
E
L
L
U
L
A
R
R
E
S
P
I
R
A
T
I
O
N
NAME: ________________________ DATE:_______________ PERIOD: ____________
Independent Practice
Crosswords: Use your notes to complete the puzzle below.
1
2
3
4
5
6
7
8
9
10
11
ACROSS
1. production of Glucose & Water from
Radiant energy
5. eat other organisms for energy
6. contains chlorophyll and found in
plant cells
8. builds in muscles due to fermentation
9. H2O
10. O2
11. production of Carbon dioxide, Water
and ATP
DOWN
1. makes its own food
2. pigment in chloroplast used in
photosynthesis
3. Breakdown of Glucose without
oxygen
4. CO2
7. C6H12O6
NAME: ________________________ DATE:_______________ PERIOD: ____________
Completion: Answer the following questions completely (2 points each)
1. Why are producers important to the survival of all organisms?
2. How do photosynthesis and cellular respiration relate to one another?
True or False: Answer each question as true or false (1 point each)
__________ Plants and animals capture their energy directly from sunlight.
__________ Animal cells create ATP in the mitochondria.
__________ Chlorophyll is a yellow pigment found in the chloroplasts.
Fill in the Blank: (1 point each)
3. Plants use _____________________ to make glucose.
4. During ________________________, food molecules are broken down to form
CO2 and H2O, and release large amounts of energy.
5. __________________ causes new cells to grow in plants.