of 25 /25
5.3 Overview of Cellular Respiration •Cellular Respiration •Chapter 5.3

5.3 Overview of Cellular Respiration Cellular Respiration Chapter 5.3

Embed Size (px)

Text of 5.3 Overview of Cellular Respiration Cellular Respiration Chapter 5.3

PowerPoint PresentationCellular Respiration
Chapter 5.3
Inverse Operation to Photosynthesis
5.3 Overview of Cellular Respiration
KEY CONCEPT
Cellular Respiration
- begins in the cytoplasm
- moves to the mitochondria
Overview
anaerobic (without O2)
Overview
pyruvate is broken down to CO2 andH2O
Aerobic
Stage 2 (FYI) - The Krebs Cycle
Pyruvate enters mitochondrion
Broken down further
5.3 Overview of Cellular Respiration
Stage 3: electron transport chain produces a large amount of ATP.
in inner membrane
waste products
6H O
Krebs Cycle Animation
The equation for the overall process is:
C6H12O6 + 6O2 6CO2 + 6H2O
5.3 Overview of Cellular Respiration
KEY CONCEPT
5.3 Overview of Cellular Respiration
Fermentation
The two types of fermentation are:
alcohol fermentation
Fermentation
Fungi such as yeast carry out fermentation
Humans use fermentation, in their muscle cells (lactic acid)
Some plants use fermentation
Fermentation is used in food production.
yogurt
cheese
bread
wine
Overview
It cannot make its own food
It must each sugar from another source.
They grow on their food source
Enzymes are released to break down the sugar
This is absorbed and used as food by the fungi.
5.3 Overview of Cellular Respiration
Overview
(beer, wine, yogurt, cheese)
Yeast Fermentation Lab
Pick up one lab sheet per group
Put ALL names on the lab sheet (1st & Last)
5.3 Overview of Cellular Respiration
Stop Here
Determining Your Experiment
Send one person to me to select 2 cards
These indicate your experimental group number and what foods you will be feeding your yeast.
Group # indicates the number of sugar packets you will need
The other word is a different form of sweetener you will experiment with.
5.3 Overview of Cellular Respiration
Materials needed in each group:
2 water bottles
The alternate sweetener
The experiment
Heat to 110° F
Add 1 yeast packet & stir until dissolved
Do the same with the 2nd bottle of water
5.3 Overview of Cellular Respiration
Experiment
Do this with a partner:
Add the # of sugar packets for your group to one bottle.
Immediately cover the bottle top with a balloon
Swirl the water to mix the sugar & yeast mixture
Start timing 5 minutes
In the other bottle instead of sugar add the different sweetener.
Immediately cap with a balloon and swirl
Time for 5 minutes
Experiment
Every 5 minutes:
Use the ribbon to measure the widest part of the balloon
Use a ruler or meter stick to get the cm measurement
Write this data on your chart.
5.3 Overview of Cellular Respiration
Save your Data
Clean up your area
Return all borrowed materials
Dump water bottles down the sink