Give reasons for the following:
Yeast makes the dough rise.

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Solution

Yeast
Yeast is one of the fungi widely used in food industry.
In baking industry, yeast is used as baking powder for making bread, pastry and cake spongy and soft.
Yeast is also used to raise dough for idli, dosa, bhatura and dhokla.
Yeast cells break down sugar during anaerobic respiration (also called fermentation), and produce alcohol and carbon dioxide.
Bubbles of carbon dioxide gas fill the spaces in dough and make it rise.

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Name the micro-organism used in bread-making which makes the bread-dough rise. How does it makes the dough rise ?

give reason- the dough prepared for making idli rises when kept overnight

Assertion (A): Yeast is used in bakeries to make bread and cakes.
Reason (R): Yeast are added to the dough to produce carbon dioxide which makes the dough rise by fermentation process.

Q. Assertion: Yeasts, such as Saccharomyces Cerivisiae are used in baking industry.
Reason: Carbon dioxide produced during fermentation causes bread dough to rise by thermal expansion.

Q. Give scientific reasons for the following:
(a) In colder parts of the world, summer vegetables are sun dried.
(b) Atta (wheat flour) can be stored for a longer duration than cooked chapattis.
(c) When yeast is kneaded with dough, dough rises after some time.
(d) Shoes and clothes get mould easily during the rainy season.

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Give reasons for the following:Yeast makes the dough rise.

Give reasons for the following:
Yeast makes the dough rise.