Multiple Choice Questions

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Number of peptide bonds in dipeptide is

  • 2

  • 1

  • 3

  • 4


A.

2

Number of peptide bonds in peptide is two.


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Identify the statement which is not correct from the following.

(i)Carbohydrates are stored as glycogen in animals.

(ii) In glycylalanine, CO of peptide bond belongs to alanine.

(iii) Base - sugar- phosphate unit is known as nucleoside.

(iv) Obesity is due to hypothyroidism.

The correct answer is:

  • i, iv

  • ii, iii, iv

  • i, iii, iv

  • ii, iii


Vitamin-B12 contains

  • CO

  • Fe

  • Zn

  • Ca


Lactose sugar is formed from

  • d-galactose

  • d-glucose

  • d-galactose and d-glucose

  • d-glucose and d-fructose


Blood sugar is

  • fructose

  • maltose

  • haemoglobin

  • glucose


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Proteins are hydrolysed by enzymes to give

  • dihydroxy acids

  • amino acids

  • amines

  • carboxylic acids


The helical structure of proteins is stabilised by

  • peptide bonds

  • dipeptide bond

  • hydrogen bond

  • van der Waal's forces


Observe the following statements.

I. Sucrose has glycosidic linkage.

II. Cellulose is present in both plants and animals.

III. Lactose contains D-galactose and D-glucose units.

Which of the following statements are correct?

  • (I), (II) and (III)

  • (I) and (II)

  • (II) and (III)

  • (I) and (III)


DNA contains the sugar

  • Deoxyribose

  • Ribose

  • D-fructose

  • D-glucose


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Carbohydrates are stored in human body as

  • glucose

  • glycogen

  • starch

  • fructose


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