Which one of the following condition helps in the puffing up of dough when mixed with yeast?

Excess supply of oxygen

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Absence of oxygen

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Presence of nitrogen

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Presence of more wheat flour

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Solution

The correct option is B
Absence of oxygen

Yeast mixed with dough requires an environment free from oxygen. This helps yeast to form ethanol and carbon dioxide which results in the puffing of dough. This is an example of anaerobic respiration, which takes place in the absence of oxygen.

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Which one of the following condition helps in the puffing up of dough when mixed with yeast?

The correct option is B Absence of oxygen Yeast mixed with dough requires an environment free from oxygen. This helps yeast to form ethanol and carbon dioxide which results in the puffing of dough. This is an example of anaerobic respiration, which takes place in the absence of oxygen.

The correct option is B
Absence of oxygen

Yeast mixed with dough requires an environment free from oxygen. This helps yeast to form ethanol and carbon dioxide which results in the puffing of dough. This is an example of anaerobic respiration, which takes place in the absence of oxygen.