Explain why very high temperatures stop gas production.
because it kills or disables they east that make the gas.
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15
What does COâ do inside the dough?
Makes it rise and creating the light, airy texture
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15
What does âanaerobicâ mean?
No oxygen needed
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15
What is the role of enzymes in yeast respiration?
Tiny, specialized, high-speed workers (or tools) that make chemical reactions happen instantly
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15
Explain why more COâ is produced at the optimum temperature.
More is produced at an optimum temperature primarily because that temperature provides the perfect environment for the enzymes involved in metabolic processes
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15
What happens to yeast respiration when it is cold?
Significantly slows it down
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15
Why doesnât ethanol make the bread rise?
because it stays in liquid form inside the dough, while the gas needed for lifting the bread is carbon dioxide.
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15
Does yeast respire with or without oxygen in dough?
Without
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15
Link respiration rate to gas volume in bread dough.
higher yeast respiration equals faster carbon dioxide production, which leads to a quicker increase in gas volume (dough expansion).
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15
Write the word equation for yeast respiration.
Glucose --> ATP + CO2 + Ethanol
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15
Why might dough not rise in a hot car?
Yeast is a living organism, and when exposed to temperatures that are too high, it stops working or dies, causing the bread to fail.
