Class XII Chemistry Biomolecules Quiz 1

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Question 1

Identify the essential amino acid from the following:

• AGlycine
• BAlanine
• CThreonine
• DGlutamic acid

Question 2

Calculate the pI value for the given amino acid with the provided pKa values:

• A5.95
• B6.3
• C9.87
• D10.13

Question 3

Which among the following amino acid is sweet and hence named after it?

• AGlycine
• BAlanine
• CThreonine
• DGlutamic acid

Question 4

The given amino acid reacts with

• AEthanol
• BSodium Hydroxide
• CAldehyde
• DAll of these

Question 5

Out of the 20 amino acids only two of them contain sulfur. Those two amino acids are

• ACysteine and alanine
• BAlanine and methionine
• CMethionine and tyrosine
• DMethionine and cysteine

Question 6

The pH value of solution in which a polar amino acid does not migrate under the influence of electric field is called-

• AIsoelectric point
• Belectronic point
• CNeutralisation point
• DNone of these

Question 7

From the given figure, calculate the value of pH at isoelectronic point for threonine.

• A6.93
• B5.85
• C3.33
• D6.23

Question 8

Which of the following aminoacids is basic in nature?

• AValine
• BTyrosine
• CArginine
• DLeucine

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