1. Bellringer 3/30 What is the purpose of photosynthesis?
What does the plant need to perform photosynthesis?
What are the products of photosynthesis?
What is the purpose of respiration?
What does an organism need to perform cellular respiration?
What are the products of cellular respiration?
What are the products of alcoholic fermentation?

2. Why do organisms need food?

3. Organisms use food to make ATP
ATP (adenosine triphosphate) → the molecule used for energy in ALL cells.

4. release energy = ATP → ADP + P
When a cell needs to use energy, it breaks off one phosphate group to make ADP
release energy = ATP → ADP + P
When a cell wants to store energy, it makes ATP
store energy = ADP + P → ATP

5. What process makes ATP (energy)?

6. RESPIRATION!
Chemical reaction that makes ATP for ALL organisms.

7. TWO types of respiration…OR
Aerobic (Cellular) Respiration
Anaerobic Respiration (Fermentation)

8. Aerobic (Cellular) Respiration
Uses O2 and food (glucose) to make ATP
All organisms except some fungi and bacteria
Occurs in the MITOCHONDRIA
Produces H2O and CO2
Makes LOTS of ATP

9. Energy Cell Carbon Dioxide Water Oxygen Glucose Used by cell
Excreted out
Water
Energy Cell
Used by cell
Oxygen
Need to get it from outside cell
Glucose
Get from food

10. The PRODUCTS of one reaction are the REACTANTS of the other reaction.

11. In which way are photosynthesis and cellular respiration different?
Cellular respiration stores ATP, while photosynthesis releases ATP.
Cellular respiration produces oxygen, while photosynthesis uses oxygen.
Photosynthesis releases energy, while cellular respiration stores energy.
Photosynthesis uses carbon dioxide, while cellular respiration produces carbon dioxide.

12. Anaerobic Respiration (Fermentation)
Does NOT use Oxygen
Uses ONLY food (glucose) to make ATP
makes very little ATP

13. Fermentation (anaerobic respiration) can be…
LACTIC ACID
Occurs in humans when there is a lack of O2
Result of pushing yourself beyond your usual endurance
Produces lactic acid = muscle cramps
ALCOHOLIC
Occurs in yeast
Produces CO2 and ethyl alcohol

14. Which organism is most likely to use anaerobic respiration?
Bird
Moss
Tree
Yeast

15. Two different species of bacteria are examined
Two different species of bacteria are examined. Scientists find that Species X always produces CO2 and H2O during cellular respiration. Species Y always produces ethyl alcohol and CO2. Which conclusion can be made from these observations?
Only Species Y is aerobic
Only Species Y is anaerobic
Both Species X and Y are aerobic
Both Species X and Y are anaerobic.

16. Bioenergetic Reactions
Photosynthesis
CO2 + H2O → C6H12O6 + O2
Carbon dioxide + water → glucose oxygen
Aerobic Respiration
C6H12O6 + O2 → CO2 + H2O ATP
Glucose oxygen → carbon dioxide + water
Anaerobic Respiration (Alcoholic Fermentation)
C6H12O6 → CO2 + C2H5OH ATP
glucose → carbon dioxide + ethyl alcohol