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Questions and Answers
What type of organism are yeast?
What type of organism are yeast?
- Fungi (correct)
- Virus
- Protist
- Bacteria
What two things do yeast need to wake up?
What two things do yeast need to wake up?
- Milk and eggs
- Butter and salt
- Water and sugar (correct)
- Salt and flour
From what substance do yeast get their energy?
From what substance do yeast get their energy?
- Water
- Air
- Salt
- Sugar (correct)
What is the name of the process yeast use to make energy with oxygen?
What is the name of the process yeast use to make energy with oxygen?
Besides energy, what else does cellular respiration produce?
Besides energy, what else does cellular respiration produce?
What gas produced by yeast helps bread rise?
What gas produced by yeast helps bread rise?
What are the products of fermentation?
What are the products of fermentation?
Why is carbon dioxide production important when studying yeast?
Why is carbon dioxide production important when studying yeast?
What does a COâ‚‚ sensor measure in an experiment with yeast?
What does a COâ‚‚ sensor measure in an experiment with yeast?
What form of energy do yeast produce during cellular respiration and fermentation?
What form of energy do yeast produce during cellular respiration and fermentation?
Which process gives yeast more energy?
Which process gives yeast more energy?
Which of the following is NOT an output of fermentation?
Which of the following is NOT an output of fermentation?
What does more COâ‚‚ production indicate about sugar usage?
What does more COâ‚‚ production indicate about sugar usage?
In an experiment, what variable are you changing?
In an experiment, what variable are you changing?
What will a COâ‚‚ sensor show?
What will a COâ‚‚ sensor show?
What does ATP stand for?
What does ATP stand for?
What do yeast do?
What do yeast do?
Is yeast an animal?
Is yeast an animal?
How much energy does fermentation produce?
How much energy does fermentation produce?
Flashcards
What are yeast?
What are yeast?
Tiny living fungi used in baking that become active when mixed with water and sugar.
Yeast's energy source
Yeast's energy source
Yeast obtain energy from sugar through cellular respiration or fermentation to fuel their growth and activities.
Cellular respiration (in yeast)
Cellular respiration (in yeast)
The process where yeast uses oxygen and sugar to produce energy (ATP), water, and carbon dioxide.
Fermentation (in yeast)
Fermentation (in yeast)
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Carbon Dioxide (COâ‚‚) in yeast activity
Carbon Dioxide (COâ‚‚) in yeast activity
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COâ‚‚ production significance
COâ‚‚ production significance
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Study Notes
- Yeast are living fungi.
- They can be purchased in packets for baking.
- Yeast become active when water and sugar are added.
Energy Source
- Yeast acquire energy from sugar.
- They break down sugar to generate energy that supports their functions and growth.
Energy Production Methods
- Yeast can produce energy through two processes: cellular respiration and fermentation.
Cellular Respiration
- Cellular respiration occurs with oxygen.
- Yeast use oxygen and sugar to produce energy (ATP), water, and carbon dioxide (COâ‚‚).
- This process yields a significant amount of energy.
- The COâ‚‚ bubbles produced help bread rise.
Fermentation
- Fermentation occurs without oxygen.
- It allows yeast to produce energy in the absence of oxygen.
- Fermentation results in a small amount of energy, carbon dioxide (COâ‚‚), and alcohol.
Importance of COâ‚‚
- Yeast release carbon dioxide gas as a byproduct of energy production.
- The quantity of gas produced indicates the rate of sugar consumption and energy production.
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