Question 32
Colonies of yeast fail to multiply in water but multiply in sugar solution. Give one reason for this.

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Solution

Yeasts are eukaryotic microorganisms, classified in the kingdom of Fungi. Yeasts are chemoorganotrophs and they use organic compounds as a source of energy. Carbon is obtained through various sugars. Yeasts can metabolize sugars as they ferment sugar resulting in the formation of ethanol. So, sugar provides energy to yeasts, which helps to carry out various life processes.

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Q. Colonies of yeast fail to multiply in water, but multiply in sugar solution. Give one reason for this.

Question 32
Colonies of yeast fail to multiply in water but multiply in sugar solution. Give one reason for this.

Q. The yeast cells fail to multiply in water but multiply rapidly in sugar solution. Give reason.

Q. The yeast cell fail to multiply in water but they multiply rapidly in sugar solution. Why?

(a) The yeast cells fail to multiply in water but they multiply rapidly in sugar solution. Give one reason for it.
(b) Why does bread mould grow profusely on a moist slice of bread but not on a dry slice of bread?

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Question 32 Colonies of yeast fail to multiply in water but multiply in sugar solution. Give one reason for this.

Question 32
Colonies of yeast fail to multiply in water but multiply in sugar solution. Give one reason for this.