Q63 of 71 Page 212

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 naturally occurring a-aminoacids except glycine are optically active.


Reason : Most naturally occurring amino acids have L-configuration.


All naturally occurring α-amino acids except glycine are optically active. This is because glycine does not have all four different substituent which means that the carbon atom is achiral.


Glycine

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61

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 : Vitamin D can be stored in our body.


Reason : Vitamin D is fat soluble vitamin.


 62

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 : β-glycosidic linkage is present in maltose,



Reason : Maltose is composed of two glucose units in which C–1 of one glucose unit is linked to C–4 of another glucose unit.


 64

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 : Deoxyribose, C5H10O4 is not a carbohydrate.


Reason : Carbohydrates are hydrates of carbon so compounds which follow Cx(H2O)y formula are carbohydrates.


 65

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 : Glycine must be taken through diet.


Reason : It is an essential amino acid.