ICSE Class 10 Biomolecules — Mock Test

Free online mock test for Biomolecules (ICSE Class 10 Chemistry) — 76 competency-based questions with instant marking. Try the samples below, then take the full test free.

Sample questions

1. 1.All of the following statements about proteins and amino acids are correct EXCEPT:
   • A.All proteins are polymers of alpha-amino acids
   • B.Only alpha-amino acids are obtained on hydrolysis of proteins
   • C.Most naturally occurring amino acids have the D-configuration
   • D.Equal numbers of amino and carboxyl groups make an amino acid neutral
2. 2.Regarding the bases in DNA and RNA, which statement is correct?
   • A.Both contain adenine, guanine and cytosine, but the fourth base is thymine in DNA and uracil in RNA
   • B.Both contain thymine but only RNA contains adenine
   • C.DNA contains uracil and RNA contains thymine
   • D.Both DNA and RNA contain all five bases A, G, C, T and U
3. 3.Assertion (A): The two strands of a DNA molecule are complementary to each other. Reason (R): Adenine forms hydrogen bonds with thymine whereas cytosine forms hydrogen bonds with guanine.
   • A.Both A and R are true and R is the correct explanation of A
   • B.Both A and R are true but R is NOT the correct explanation of A
   • C.A is true but R is false
   • D.A is false but R is true
4. 4.The fat soluble vitamins are:
   • A.A, D, E and K
   • B.B group and C
   • C.B1, B2 and B6
   • D.C and B12 only
5. 5.![dna_double_helix.png]() In the figure the connections between paired bases are drawn with different numbers of lines. The G-C pairs are drawn with three lines (shown as triple) while the A-T pairs are drawn with two lines (shown as double). What does this difference in the number of lines represent?
   • A.The number of hydrogen bonds holding each base pair together, with G-C having three and A-T having two
   • B.The number of sugar units in each base
   • C.The number of phosphate groups attached to each base
   • D.The number of carbon atoms in each base