Photosynthesis & Cellular Respiration Worksheet
Name:__________________________________________Period:_______
Vocabulary: Match the phrases on the left with the term that best fits. Use answers only one
time.
__L__1. Organisms that make their own food
A. Chloroplasts
__A__2. Site of photosynthesis
B. Aneorobic
__J__3.Process occurs in a mitochondrion
C. Aerobic
__K__4.C6H12O6
D. light-independent reaction
_D___5. Process does not require oxygen
E. chlorophyll
_C___6. Process requires oxygen
F. sunlight
_H___ 7. The ability to do work
G. Glycolysis
__I__8.
H. Energy
Energy storing molecule
_G___9. The anaerobic process of splitting glucose
and forming two molecules of pyruvic acid
I. ATP
__F__ 10. This starts the process of photosynthesis
J. Kreb’s cycle
__B__ 11. This process does not require sunlight.
K. Glucose
__E__ 12. The pigment that traps sunlight
L. Autotrophs
Directions: Answer each of the following questions in a clear and concise manner.
1. Compare and discuss how cells store energy and release energy using ATP. Be specific! You may
draw the cycle.
ATP IS THE ENERGY STORING MOLECULE. THE ENERGY IS STORED IN THE BONDS OF
THE 2ND & 3RD PHOSPHATE. WHEN THE BOND IN BROKEN BETWEEN THE 2ND & 3RD
PHOSPHATE ENERGY IS RELEASED. ATP IS NOW ADP. T O GET BACK TO ATP ALL THAT
HAS TO HAPPEN IS THAT A PHOSPHATE IS BONDED TO THE 2ND PHOSPHATE ON ADP
1
2. Compare lactic acid fermentation and alcoholic fermentation by describing what pyruvic acid is
changed in to. Be sure to include what type of organism each one takes place in.
What is pyruvic acid changed into?
Alcoholic Fermentation
Lactic Acid Fermentation
Organism:
ETHYL ALCOHOL
YEAST & BACTERIA
LACTIC ACID
ANIMALS/HUMANS
3. Name the three processes of aerobic cellular respiration. How many ATP’s does each process
produce, and what is the total ATP produced from one glucose?
3 Processes of Cellular
Respiration:
# ATP produced:
2
GLYCOLYSIS
KREBS CYCLE
2
ELECTRON TRANSPORT
CHAIN
28 - 34
Total ATP =___30-38 ATP_______
4. Name the two stages of photosynthesis and list the starting molecule(s) and ending molecule(s) of
each.
Stages
LIGHT DEPENDENT REACTION
Starting Molecule(s)
LIGHT & H2O
LIGHT SPLITS H2O
KEEPING THE
HYRDOGENS
HYDROGENS + CO2
Product(s)
O2 IS RELEASED & THE
HYDROGENS ARE TAKEN
TO THE NEXT STEP
C6H12O6
LIGHT INDEPENDENT REACTION
5. What is the general chemical equation of photosynthesis?
WATER + CARBDON DIOXIDE + LIGHT  SUGAR + OXYGEN
H2O + CO2  C6H12O6 + O2
2
6. When and why does our body use lactic acid fermentation?
LACTIC ACIDS FERMENTATION OCCURS DURING STRENUOUS EXERCISE WHEN NOT
ENOUGH OXYGEN IS AVAILABLE FOR YOUR MUSCLE CELLS TO USE TO CREATE ATP
7. Explain how the equations for photosynthesis and cellular respiration compare.
THEY ARE BASICALLY THE SAME FORMULA BUT MIRROR IMAGES OF EACH OTHER.
WHAT GOES INTO ONE PROCESS IS WHAT COMES OUT OF THE OTHER.
WATER & CARBON DIOXIDE GO INTO PHOTOSYNTHESIS AND WATER AND CARBON
DIOXIDE COME OUT OF CELLULAR RESPIRATION.
3