Biomolecules - Assessment

1.

Multiple Choice

1 min

1 pt

Glucose does not react with

NH2OH

Conc. HNO3

(CH3CO)2O

NaHSO3

2.

Multiple Choice

1 min

1 pt

Glucose on oxidation with Br2(aq) gives

Gluconic acid

Tartaric acid

Sachharic acid

Meso-oxalic acid

3.

Multiple Choice

1 min

1 pt

In aqueous solution, an amino acid exist as

cation

anion

zwitter ion

neutral molecule

4.

Multiple Choice

1 min

1 pt

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

Peptide bonds

van der Waals forces

Hydrogen bonds

Dipole-dipole interactions

5.

Multiple Choice

1 min

1 pt

Nucleic acids are the polymers of __________ .

Nucleosides

Nucleotides

Bases

Sugars

6.

Multiple Choice

1 min

1 pt

Identify the biomolecule

Carbohydrate

Lipid

Protein

Nucleic Acid

7.

Multiple Choice

1 min

1 pt

Identify the biomolecule

Lipid

Protein

Carbohydrate

Nucleic Acid

8.

Multiple Choice

1 min

1 pt

What is the monomer for a protein?

Monosaccharide

Triglyceride

Amino Acid

Nucleotide

9.

Multiple Choice

1 min

1 pt

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.

10.

Multiple Choice

1 min

1 pt

α-D (+) glucose and β-D (+) – glucose are

Enantiomers

Geometrical isomers

Anomers

Epimers

11.

Multiple Choice

1 min

1 pt

The sugar present in milk is

Sucrose

Maltose

Glucose

lactose

12.

Multiple Choice

1 min

1 pt

Keratin present in hair is an example of

Fibrous protein

Globular protein

Conjugated protein

Derived protein

13.

Multiple Choice

1 min

1 pt

DNA and RNA differ in

Sugar

Purines

Pyrimidines

Both (a) and (c)

14.

Multiple Choice

1 min

1 pt

Carbohydrates are classified on the basis of their behaviour on hydrolysis and also as reducing or non-reducing sugar. Sucrose is a __________ .

monosaccharide

reducing sugar

non-reducing sugar

polysaccharide

15.

Multiple Choice

1 min

1 pt

Which of the following reactions of glucose can be explained only by its cyclic structure?

Glucose forms pentaacetate

Glucose reacts with hydroxylamine to form an oxime.

Pentaacetate of glucose does not react with hydroxylamine.

Glucose is oxidised by nitric acid to gluconic acid

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