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B
Cake
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C
Bread
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D
All of the above
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Solution
The correct option is D
All of the above
Explanation for correct answer:
(d) All of the above
Yeasts are facultative anaerobes or obligate aerobes.
In presence of oxygen, it carries out cellular respiration of carbohydrate source to give and which is useful in cake and bread preparation due to the release of which helps cakes and breads to be spongy.
Yeast undergoes fermentation to give alcohol and , which is useful in alcohol production.
The glucose is used as a substrate which gives pyruvate (via EMP pathway) which further undergoes reductive decarboxylation in absence of oxygen with the help of specific enzymes to give ethanol and
Hence, yeast is used in the production of cakes, alcohol, and bread.
So this is the correct option
Explanation for incorrect options :
(a) Alcohol
Yeast is used in the production of cakes, alcohol, and bread.
This option states that yeast is only used in alcohol production.
So this cannot be the correct option
(b) Cake
Yeast is used in the production of cakes, alcohol, and bread.
This option states that cake is only used in alcohol production.
So this cannot be the correct option
(c ) Bread
Yeast is used in the production of cakes, alcohol, and bread.
This option states that bread is only used in alcohol production.
So this cannot be the correct option
The correct option is option (d) all of the above.