State whether the following are true or false.
(ii) Yeast respires aerobically.
A
True
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B
False
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Solution
The correct option is B False Answer: False.
Yeast respires anaerobically in the absence of air i.e., without using oxygen to produce alcohol and carbon dioxide. It is used in bakeries and breweries.
In breweries, yeast help in the production of alcohols by the process of fermentation.
In bakeries, yeast is used as a leavening agent allowing the dough to rise giving the bread a light and spongy texture.