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A food stall owner was preparing dough for making bhaturas. He added a pinch of yeast and sugar to the dough and left it in a warm place. After a few hours, the dough had risen. - Science

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Question

A food stall owner was preparing dough for making bhaturas. He added a pinch of yeast and sugar to the dough and left it in a warm place. After a few hours, the dough had risen. There was a sour smell too.

Why was sugar added to the dough?

One Line Answer

Solution

Sugar acts as food for yeast.

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Chapter 10: Respiration in Organisms - LONG ANSWER QUESTIONS [Page 56]

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NCERT Exemplar Science [English] Class 7
Chapter 10 Respiration in Organisms
LONG ANSWER QUESTIONS | Q 18. (c) | Page 56

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A food stall owner was preparing dough for making bhaturas. He added a pinch of yeast and sugar to the dough and left it in a warm place. After a few hours, the dough had risen. There was a sour smell too.

Why did the dough rise?


RuBP carboxylase, PEP carboxylase, Pyruvate dehydrogenase, ATPase, cytochrome oxidase, Hexokinase, Lactate dehydrogenase.

Select/choose enzymes from the list above which are involved in

  1. Photosynthesis
  2. Respiration
  3. Both in photosynthesis and respiration

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