1. Warm up 11/10 What are the 2 parts of light reactions?
What goes into the light reactions?
What comes out?
What is the process called that makes ATP?
What enzyme is used?
In the Calvin Cycle:
What goes in?
What powers the Calvin Cycle?
Quiz in 5 minutes

2. Chapter 7: Cellular Respiration
C6H12O6 + 6O2  6CO2 + 6H2O + ATP (Energy)

3. Cellular Respiration Cellular Respiration
-Process where cells make ATP by breaking down organic compounds (such as glucose)
Cellular Respiration
-Autotrophs and heterotrophs both undergo respiration
How is this equation different from photosynthesis?
-Occurs in the cytoplasm and mitochondria
Overall equation:
C6H12O6 + 6O2  6CO2 + 6 H2O + ATP

4. What’s so great about ATP?
Every time you move a muscle, think, breathe, replicate your DNA, every time your heart beats - you use ATP to do this work!

5. Warm-up 11/12: Write the chemical equation for Cellular Respiration.
Both Symbolically and In English
In Photosynthesis Endergonic or Exergonic?
What about Cellular Respiration?
Cellular Respiration is the opposite of Photosynthesis. The first step of Cellular Respiration is Glycolysis where a glucose turns into two pyruvic-acids. What can you tell about pyruvic-acid from you knowledge of photosynthesis.

7. Two pathways exist for accessing stored energy…
Aerobic Pathways take place in the presence of oxygen
Anaerobic Pathways take place in the absence of oxygen
Both pathways: 1) Begin with Glycolysis
2) Produce a Pyruvic Acid Intermediate
3) Differ in ATP production and final product

8. If an organism lived in an O2 deficient environment it would undergo the _____________ pathway.

10. Step 1: Glycolysis (anerobic Respiration)
Location: Cytosol (cytoplasm)
Description
6 carbon molecule of glucose is split
Anaerobic (no oxygen needed)
Reactant: C6H12O6 (glucose)
Products: 2 Pyruvic Acids (3-carbon molecule) & 2 ATP
The pyruvic acid will enter mitochondria for further processing

11. If oxygen is present then Aerobic respiration occurs
If oxygen is not available then cells continue to perform glycolysis to make 2 ATPs

13. Aerobic Respiration Step 2: Kreb’s Cycle
Series of reactions that occur in mitochondrial matrix
Reactants: Pyruvic acid (from glycolysis)
Products: 2 CO2 and 2 ATP

15. The Krebs Cycle begins with pyruvic acid which was produced by ______________.
The Krebs cycle occurs in the __________________ _____________.

17. Aerobic Respiration Step 2: Kreb’s Cycle
Series of reactions that occur in mitochondrial matrix
Reactants: Pyruvic acid (from glycolysis)
Products: 2 CO2 and 2 ATP

19. Aerobic Respiration Step 3: Electron Transport Chain
The “big ATP payoff”
Location: cristae (inner membrane) of mitochondria
Reactants: O2
Products: H2O, 34 ATP

20. Aerobic Respiration Step 3: Electron Transport Chain
3. e- are transferred down the ETC.
4. Energy released by this transfer pump H+ from the matrix to inter-membrane space. Creating a Concentration Gradient.
5. O2 accepts the e- at the end of the ETC making H2O.
Without O2 the electrons can’t react and get stuck stopping the ETC.

21. Aerobic Respiration Step 3: Electron Transport Chain
6. The only exit for these protons is through ATP synthase.
7. It spins providing energy for converting ADP into ATP
This process is called
chemiosmosis
The same as in photosynthesis

23. ______________ is the process responsible for producing the ATP
__________ is produced at the end of the electron transport chain in the mitochondria
______________ is the process responsible for producing the ATP
___________ accepts the electron to make water at the end of the ETC
H2O
Chemiosmosis
Oxygen

24. Total Energy Production: 36 ATP
2 ATP from glycolysis
2 ATP from Kreb’s Cycle
34 ATP from ETC (chemiosmosis)
38 ATP Made In Total
- 2 ATP for transporting pyruvic acid into the Mitochondria from Glycolysis
36 Net ATP Made
Aerobic Respiration is 20 times more efficient than Glycolysis alone.

25. Assignments Homework: Study Guide Mitochondria Coloring
Due Tomorrow
Photosynthesis & Cellular Respiration
Due Monday
Study Guide
Due Tuesday

26. Anaerobic vs. Aerobic
Anaerobic pathway (fermentation) = Glycolysis  2 ATP
Aerobic Pathway = Glycolysis + Kreb’s Cycle + ETC  36 ATP

27. Fact
Fact: Our bodies uses ATP at the rate of about 1 million molecules per cell per second.
There are more than 100 trillion cells in the human body. That’s about 100,000,000,000,000,000,000 ATP molecules used in your body each second!

28. Assignments Homework: Study Guide Mitochondria Coloring
Due Tomorrow
Photosynthesis & Respiration
Due Monday
Study Guide
Due Tuesday

29. Assignments
Homework: Cell Respiration Steps,

30. Videos
Discovery Education
Cell resp and Glycolysis
From food to ATP

31. Make and fill in this chart
Process
Location
Reactants
Products
# of ATP Made
Glycolysis
Kreb’s Cycle
Electron Transport Chain