Biomolecules Quiz

Glycogen is a branched chain polymer of α-D-glucose units in which chain is formed by C1—C4 glycosidic linkage whereas branching occurs by the formation of C1-C6 glycosidic linkage. Structure of glycogen is similar to __________.

• Amylose

• Amylopectin

• Cellulose

• Glucose

Which of the following polymer is stored in the liver of animals?

• Amylose

• Cellulose

• Amylopectin

• Glycogen

Sucrose (cane sugar) is a disaccharide. One molecule of sucrose on hydrolysis gives _________.

• 2 molecules of glucose

• 2 molecules of glucose + 1 molecule of fructose

• 1 molecule of glucose + 1 molecule of fructose

• 2 molecules of fructose

Proteins are found to have two different types of secondary structures viz. α-helix and β-pleated sheet structure. α-helix structure of protein is stabilised by :

• Peptide bonds

• van der Waals forces

• Hydrogen bonds

• Dipole-dipole interactions

Which of the following acids is a vitamin?

• Aspartic acid

• Ascorbic acid

• Adipic acid

• Saccharic acid

Nucleic acids are the polymers of ______________.

• Nucleosides

• Nucleotides

• Bases

• Sugars

Which of the following statements is not true about glucose?

• It is an aldohexose.

• On heating with HI it forms n-hexane.

• It is present in furanose form.

• It does not give 2,4-DNP test.

Each polypeptide in a protein has aminoacids linked with each other in a specific sequence. This sequence of amino acids is said to be ____________.

• primary structure of proteins.

• secondary structure of proteins.

• tertiary structure of proteins.

• quaternary structure of proteins.

DNA and RNA contain four bases each. Which of the following bases is not present in RNA?

• Adenine

• Uracil

• Thymine

• Cytosine

Which of the following B group vitamins can be stored in our body?

• Vitamin B1

• Vitamin B2

• Vitamin B6

• Vitamin B12