Observe the pictures below and predict the condition required for the dough to puff up when mixed with yeast granules.

Excess supply of oxygen

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Absence of oxygen

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Presence of oxygen

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

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Similar questions

Observe the pictures below and predict the condition required for the dough to puff up when mixed with yeast granules.

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

When carbon is heated in presence of oxygen, carbon monoxide and carbondioxide are produced depending on the supply of oxygen. This illustrates:

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