Genetic Matieraial-DNA And RNA Test

Genetic Matieraial-DNA And RNA

This is online test 01 for CBSE class 12 Biology Molecular Basis of Inheritance (Genetic matieraial-DNA and RNA).. There are 10 questions in this test with each question having around four answer choices.

Questions & Answers

1
Genetic information is carried out by long chain molecule made up of
  • A
    Enzymes
  • B
    Amino acids
  • C
    Nucleotides
    Correct
  • D
    Histone proteins
2
Name the conjugated protein used as genetic material in living cells
  • A
    Metalloprotein
  • B
    Glycoprotein
  • C
    Lipoprotein
  • D
    Nucleoprotein
    Correct
3
By which bonds the purine & pyrimidine pairs of Complementary Strands of DNA held together?
  • A
    N – bonds
  • B
    H – bonds
    Correct
  • C
    C - bonds
  • D
    O - bonds
4
There is no DNA in
  • A
    Mature RBCs
    Correct
  • B
    Hair root
  • C
    An enucleated ovum
  • D
    A mature spermatozoan
5
DNA is made of two chains that twist about one another in the shape of a
  • A
    Broken ladder
  • B
    Straight spiral
  • C
    Straight ladder
  • D
    Double helix
    Correct
6
______ occurs in RNA instead of the nitrogenous base thymine found in DNA.
  • A
    Cytosine
  • B
    Uracil
    Correct
  • C
    Ribose
  • D
    Guanine
7
Which ratio is constant for DNA
  • A
    A+C / U+G
  • B
    A+U / C+G
  • C
    A+T / G+C
  • D
    A+G / T+C
    Correct
8
The term gene was coined by
  • A
    Johannsen
    Correct
  • B
    Nirenberg
  • C
    Kornberg
  • D
    Khornana
9
Which of the following is structural subunit of DNA?
  • A
    RNA
  • B
    Carbohydrate
  • C
    Protein
  • D
    Nucleotides
    Correct
10
In a DNA strand the nucleotides are held together by:
  • A
    Glycosidic bonds
  • B
    Phosphodiester bonds
    Correct
  • C
    Peptide bonds
  • D
    Hydrogen bonds