Introducing
Prezi AI.
Your new presentation assistant.
Refine, enhance, and tailor your content, source relevant images, and edit visuals quicker than ever before.
Trending searches
Loading content…
Loading…
07) The Living Environment - Cell Respiration
8
Transcript
Cellular Respiration
The Mitochondria
Overview of
The Mitochondria
Overview
- Called the "power house" of the cell!
- Site of cellular respiration!
- Breaks down glucose to make ATP!
Mitochondrial Structure
How do organisms obtain energy?
- From food!
- Nutrition is the process of obtaining food while respiration is making useable energy from the food
- Chemical energy converted to useable energy
Video
Two Types of Respiration
- Aerobic - Requires oxygen
- Anaerobic - Requires no oxygen
- Produce a different amount of energy (ATP)
Two Types of Respiration
Aerobic
Aerobic - Requires oxygen
- 6O2 + C6H12O6 → 6 CO2 + 6H2O + ATP
- Oxygen + Glucose → **Carbon dioxide + **Water + ATP (adenosine triphosphate)
- **byproducts (waste)
Anaerobic - no oxygen
Anerobic
- With no oxygen, respiration can occur through
- glycolysis
- fermentation
- Uses a different set of pathways
Energy Totals
Aerobic
C6H12O6 + 6O2 → 6CO2 + 6H2O + 36ATP
Very efficient
Anaerobic
C6H12O6 → 6CO2 + lactic Acid + 2ATP
Signals muscle fatigue
Fermentation
C6H12O6 → 6CO2 + Alcohol + 2ATP
In yeast and bacteria
The Process of Aerobic Respiration
- Occurs in 3 enzyme controlled steps
- Glycolysis
- Kreb's Cycle
- Electron Transport Chain (ETC)
Aerobic -
The Steps
The ATP Molcule
ATP
- Made of adenosine and 3 phosphate groups
- Bonds between the phosphate store much energy and release it when broken
Glycolysis
Glycolysis
- “Sugar Breaking”
- 1 molecule of glucose broken into 2 molecules of pyruvic acid
- USES 2 ATP molecules
- Makes 4 total for a net total of 2 ATP
Kreb's Cycle
- We get CO2 waste here
- Gives a total of 2 ATP molecules
Electron Transport Chain
- Oxygen is used here
- Water is released as a waste product here
- Gives a total of 32 ATP!!
Energy Totals
2 ATP from Glycolysis
2 ATP from Krebs Cycle
32 ATP from Electron Transport
Total: 36 ATP molecules
ALL FROM ONE GLUCOSE!
Summary
- All cellular respiration focuses on the synthesis of ATP
- Converting chemical energy stored in bonds between glucose into energy useable by the cell
- Aerobic respiration is most efficient, synthesizing 36 ATP from 1 glucose molecule
- In most organisms, cellular respiration takes place in the mitochondria
Choose a template
Presentations from around the world
Learn more about creating dynamic, engaging presentations with Prezi