Q96 of 101 Page 237

Note: In the following questions a statement of assertion followed by a statement of reason is given. Choose the correct answer out of the following choices.

Assertion: Preservative are added to food items.


Reason: Preservatives inhibit the growth of microorganisms.


• Food preservatives are generally added to a variety of food items due to their function of prevention of food from getting spoiled caused by some micro bacterial growth.


• Food Preservatives have functions like they inhibit the growth of microorganisms that they can’t be able to spoil the food.

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94

Note: In the following questions a statement of assertion followed by a statement of reason is given. Choose the correct answer out of the following choices.

Assertion : Receptor proteins show selectivity for one chemical messenger over the other.


Reason : Chemical messenger binds to the receptor site and inhibits its natural function.


 95

Note: In the following questions a statement of assertion followed by a statement of reason is given. Choose the correct answer out of the following choices.

Assertion : All chemicals added to food are called food preservatives.


Reason : All these chemicals increase the nutritive value of the food.


 97

Note: In the following questions a statement of assertion followed by a statement of reason is given. Choose the correct answer out of the following choices.

Assertion : Artificial sweeteners are added to the food to control the intake of calories.


Reason : Most of the artificial sweeteners are inert and do not metabolise in the body.


 98

In what respect do Prontosil and Salvarsan resemble. Is there any resemblance between Azo dye and prontosil? Explain.