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Yeast Respiration Temperature Experiment

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Yeast Respiration Temperature Experiment

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Questions and Answers

What are the products of anaerobic respiration in yeast?

Ethanol and carbon dioxide

How does yeast respond when it has access to plenty of sugar?

Yeast will respire anaerobically, even if oxygen is available.

Explain how yeast contributes to bread making.

Yeast produces enzymes that break down starch in flour, releasing sugars for anaerobic respiration and causing the dough to rise due to carbon dioxide production.

What happens to the ethanol produced by yeast during bread making?

It is evaporated in the heat during baking. Signup and view all the answers

Why doesn't bread contain any alcohol despite yeast producing ethanol?

Ethanol produced by yeast is evaporated in the heat during baking. Signup and view all the answers

How does high temperature during baking affect yeast in bread making?

The high temperature kills the yeast, preventing further respiration. Signup and view all the answers

What is the role of carbon dioxide in bread making?

Carbon dioxide produced by yeast causes the dough to rise. Signup and view all the answers

Why is yeast used in bread making instead of other microorganisms?

Yeast can carry out both aerobic and anaerobic respiration, producing carbon dioxide that helps the dough rise. Signup and view all the answers

What does yeast produce when carrying out anaerobic respiration?

Ethanol and carbon dioxide Signup and view all the answers

How does the presence of sugar influence yeast respiration?

Yeast will respire anaerobically if it has access to plenty of sugar. Signup and view all the answers