1. Continued Cellular Respiration

2. Warm Up
Why do athletes ride bicycles after a big game or during a match?
Why after a sprint are athletes breathing really heavily?
Discuss with your tablemates be ready to share out?

3. Agenda Part 2 of Cellular Respiration
Anaerobic Respiration
Homework: Chapter 9, Sections 9.2, 9.3, 9.4 (pages )
How is energy transferred and transformed in each stage of cellular respiration?
What is the role of the ETC?

4. Aerobic vs Anaerobic

5. Cellular Respiration The Basic Equation

6. Anaerobic Respiration
When would this pathway occur?
What are the two types of anaerobic pathways?
Lactic Acid
Alcohol Fermentation
No mitochondria available, no oxygen available, the final receptor of O2 is not there so the H+ need a place to go NAD+ NADH (reduced)

7. Facultative Anaerobes
Glucose
Glycolysis
CYTOSOL
Pyruvate
O2 present:
Aerobic cellular
respiration
No O2 present:
Fermentation
MITOCHONDRION
(if present)
Ethanol or
lactate
Acetyl CoA
Citric
acid
cycle

8. Video

9. Lactic Acid Glycolysis Lactate accepts the H+.
Occurs in animals (cramps, bursts of activities) and bacteria (milkyogart)

10. Alcohol Fermentation Yeast
Builds up ethanol until is poisons the yeast and they die
CO2 bubbles
Middle step (acetaldehyde 2 Carbon Molecule)

11. Anaerobic Respiration Activity
This lab will determine when your body begins to use anaerobic respiration instead of aerobic respiration.

12. Background
Skeletal muscles move in the bones in the skeleton, When the muscles contract, it makes the joints able to move and lets us engage in physical activity of all kinds
Chemical energy is needed to cause muscles to contract. The chemical energy is a result of respiration

13. Slow v Fast Twitch Muscles
We have about 50% FT and 50% ST muscles
Elite athletes have a different amounts of FT and ST, depending on their sport.
FT use energy very quickly.
Used for short but intense activity
ST don’t get tired very quickly
Low to moderate intensity activities

14. Lab
Work in pairs
Squeezer and Timer
Record data in packet then add to class data (website)
Graph
Answer questions