1. AP Biology: Thursday, 11/9/11 Lab 5: Measuring Rates of Cell Respiration
Homework:
Due Tuesday: Finish the pre-lab questions on page 3.
Answer any analysis questions that you can (but save graph for class)
Start PS 9
Do Now:
Get a lab preview worksheet and answer #1-4
Goal for Today:
Design and carry out an experiment to measure rates of cell respiration

2. AP Biology: Wednesday, 11/16/11 Cellular Respiration
Homework:
Work on PS 9 (due Friday)
Do Now: On an index card:
What is one thing you learned how to do in Excel yesterday that you didn’t know before? Describe how to do this.
What is one question you still have about manipulating data in Excel?
In what ways was the cold-temperature experiment yesterday sloppy? How could it have been improved?

3. Lecture: Cellular Energetics and Cell Respiration
Goals: By the end of class you will be able to:
Define oxidation and reduction and apply it to the cell respiration chemical equation
Describe the role of NADH and FADH2 in cell respiration (and the role of all the molecules in the chemical equation)
Describe how the 3 stages of cell respiration transfer energy and electrons from glucose in order to make ATP

5. Cellular Respiration: An Overview
Overall purpose:
Release energy from food in the form of ATP for cells to use
Where it happens:
In the mitochondria of all eukaryotic cells
In aerobic bacteria
Summary equation:
C6H12O6 + 6O2  6CO2 + 6H2O + energy (ATP + heat)
glucose + oxygen  carbon dioxide + water + energy

6. Cell Respiration: A “Redox” Reaction
LEO says GER
oxidation – the loss of electrons reduction – the gain of electrons e-
reduction
C6H12O6 + 6O2  6CO2 + 6H2O
oxidation

8. Important Molecules in Cell Respiration
Glucose – provides energy and electrons
Oxygen – final electron acceptor
Carbon dioxide – low-energy waste product from glucose oxidation
Water – low-energy waste product from oxygen reduction
NADH and FADH2 – intermediate electron carriers
Transfer electrons between stages of cell resp.

9. Cristae Outer membrane Matrix Inner membrane Inter-membrane space
(folds in inner membrane)
Outer membrane
Matrix
Inner membrane
Inter-membrane space

10. AP Biology: Thursday, 11/17/11 Cellular Respiration Details
Homework:
Quiz tomorrow – you can bring one page (one side only) of notes. Typed or hand-written, but on your own paper (not any handout I’ve given you)
PS 9 due Monday
Do Now: (in your mind or in your notebook)
What’s the difference between oxidation and reduction?
What do NADH and FADH2 do in cell respiration?
What do you think “glycolysis” means?

11. Lecture: Cell Respiration Details
Goals: By the end of class you will be able to:
Describe how the 3 stages of cell respiration transfer energy and electrons from glucose in order to make ATP
Explain how cell respiration can happen in the absence of glucose, and in the absence of oxygen

12. Glycolysis: splitting glucose glucose (6 carbons) 2 pyruvate
(3 carbons each) P
to ETS

13. Citric Acid Cycle (aka Krebs cycle)
intermediate
step

14. Oxidative Phosphorylation (ETS and Chemiosmosis)

15. Inspirational Video…
Then do the first side of the worksheet

16. Cell Respiration without oxygen: Anaerobic Respiration (Fermentation)

17. Cell Respiration without oxygen: Anaerobic Respiration (Fermentation)

18. Two Types of Fermentation:
both regenerate NAD+ so that glycolysis can continue
ALCOHOL FERMENTATION
in yeast cells and some bacteria
produces ethyl alcohol and CO2
LACTIC ACID FERMENTATION
in vertebrate muscle cells and some bacteria
produces lactic acid

19. AP Biology: Friday, 11/18/11 Cellular Respiration
Homework:
Problem Set 9 due Monday
Do Now:
How do you think cell respiration can happen if a cell runs out of glucose?
Today’s Agenda:
Cell Respiration Wrap-Up
Quiz

20. Cell Respiration without glucose!

21. Total ATP Production

22. Total ATP Production

23. Quiz Work on your own for 20 minutes
Use your 1 page of notes
Partner Check-in for last 10 minutes
Confer with an assigned partner to discuss/check your answers
You may not use your notes for this part

24. Quiz Partners Adel / Imad Talia / Fatima Christina / Djinnie
Drishti / Klara
Poppy / Rishab
Nehemie / Kiraleah
Kimberly / Nicole
Jasmine / Aaron