How Do Fungi Populations Grow and
Survive?
Starring:
Yeast
• Is it alive or not?
Yeast
• Is it alive or not? –Lets revisit our characteristics of
life.
Yeast
• Characteristics of life:
Yeast• Characteristics of life:
–Cells (unicellular- thick cell wall, no hyphae)
–Responds–Grows–Reproduces–Uses energy/ gives off waste
How does it reproduce?
• Not by spores
• It’s called budding
• It “pinches” off
Yeast and Bread
• Why does bread rise?
Yeast and Bread
• Why does bread rise?
• It involves a little bit of chemistry.
• The periodic table of elements = 100+ “ingredients” of the universe
Elements• C= Carbon
Elements• C= Carbon
• H= Hydrogen
Elements• C= Carbon
• H= Hydrogen
• O= Oxygen
Elements• C= Carbon
• H= Hydrogen
• O= Oxygen
• Molecules are the smallest combination of elements that make up something that is not a pure element on the chart.
Elements• C= Carbon
• H= Hydrogen
• O= Oxygen
• Molecules are the smallest combination of elements that make up something that is not a pure element on the chart.
• i.e.: SUGAR = C6H12O6
Molecules
• SUGAR = C6H12O6
Molecules
• SUGAR = C6H12O6
• How many carbon atoms?
Molecules
• SUGAR = C6H12O6
• How many carbon atoms? 6
Molecules
• SUGAR = C6H12O6
• How many carbon atoms? 6
• How many hydrogen atoms?
Molecules
• SUGAR = C6H12O6
• How many carbon atoms? 6
• How many hydrogen atoms? 12
Molecules
• SUGAR = C6H12O6
• How many carbon atoms? 6
• How many hydrogen atoms? 12
• How many oxygen atoms?
Molecules
• SUGAR = C6H12O6
• How many carbon atoms? 6
• How many hydrogen atoms? 12
• How many oxygen atoms? 6
Molecules
• Carbon Dioxide = CO2
Molecules
• Carbon Dioxide = CO2
• How many carbon atoms?
Molecules
• Carbon Dioxide = CO2
• How many carbon atoms? 1
Molecules
• Carbon Dioxide = CO2
• How many carbon atoms? 1
• How many hydrogen atoms?
Molecules
• Carbon Dioxide = CO2
• How many carbon atoms? 1
• How many hydrogen atoms? 0
Molecules
• Carbon Dioxide = CO2
• How many carbon atoms? 1
• How many hydrogen atoms? 0
• How many oxygen atoms?
Molecules
• Carbon Dioxide = CO2
• How many carbon atoms? 1
• How many hydrogen atoms? 0
• How many oxygen atoms? 2
Molecules
• Alcohol = C2H5OH
Molecules
• Alcohol = C2H5OH
• How many carbon atoms?
Molecules
• Alcohol = C2H5OH
• How many carbon atoms? 2
Molecules
• Alcohol = C2H5OH
• How many carbon atoms? 2
• How many hydrogen atoms?
Molecules
• Alcohol = C2H5OH
• How many carbon atoms? 2
• How many hydrogen atoms? 6
Molecules
• Alcohol = C2H5OH
• How many carbon atoms? 2
• How many hydrogen atoms? 6
• How many oxygen atoms?
Molecules
• Alcohol = C2H5OH
• How many carbon atoms? 2
• How many hydrogen atoms? 6
• How many oxygen atoms? 1
What happens to make bread rise?
• Fermentation reaction:
What happens to make bread rise?
• Fermentation reaction:
• Sugar carbon dioxide + alcoholYeast
What happens to make bread rise?
• Fermentation reaction:
• Sugar carbon dioxide + alcohol
• C6H12O6 2CO2 + 2C2H5OH
Yeast
Yeast
How Do Fungi Populations Grow and
Survive?
Starring:
Cap
Gills
Spores
Stalk
Hyphae Tubes
UndergroundHyphae Tubes
Cap
Gills
Spores
Stalk
Hyphae Tubes
UndergroundHyphae Tubes
Cap
Gills
Spores
Stalk
Hyphae Tubes
UndergroundHyphae Tubes
Cap
Gills
Spores
Stalk
Hyphae Tubes
UndergroundHyphae Tubes
Ring
Cap
Gills
Spores
Stalk
Hyphae Tubes
UndergroundHyphae Tubes
Ring
Cap
Gills
Spores
Stalk
Hyphae Tubes
UndergroundHyphae Tubes
Ring
Cap
Gills
Spores
Stalk
Hyphae Tubes
UndergroundHyphae Tubes
Ring