1.

    The bond which connects a nitrogenous base with deoxyribose sugar in a nucleotide of DNA molecule is

    A

    Hydrogen bond

    B

    Glycosidic bond

    C

    Ester bond

    D

    Phosphodiester bond

    Question Tags
    πŸ“š Subject:Botany
    πŸ“‘ Chapter:Molecular Basis of Inheritance
    🎯Topic:Dna
    πŸŽ“ Ncert Level:Remembering
    🎯Difficulty :Easy
    ⚑ Time Required :1 mins
    πŸ”„Ncert Concepts :Nucleotide structure, Glycosidic bond

    Related Questions

    1.

    The backbone of a polynucleotide chain is formed due to?

    A

    Sugar

    B

    Phosphate

    C

    Nitrogen base

    D

    Both 1 and 2

    Question Tags
    πŸ“š Subject:Botany
    πŸ“‘ Chapter:Molecular Basis of Inheritance
    🎯Topic:Dna
    πŸŽ“ Ncert Level:Remembering
    🎯Difficulty :Medium
    ⚑ Time Required :1 mins
    πŸ”„Ncert Concepts :polynucleotide structure, sugar-phosphate backbone, nucleotide components

    2.

    DNA is first identified by?

    A

    Meischer

    B

    Crick

    C

    Watson

    D

    None of these

    Question Tags
    πŸ“š Subject:Botany
    πŸ“‘ Chapter:Molecular Basis of Inheritance
    🎯Topic:Dna
    πŸŽ“ Ncert Level:Remembering
    🎯Difficulty :Medium
    ⚑ Time Required :1 mins
    πŸ”„Ncert Concepts :History of DNA discovery, Scientific contributions

    3.

    Which of the following is in correct w.r.t nucleosides?

    A

    Cytosine

    B

    Guanosine

    C

    Adenosine

    D

    Uridine

    Question Tags
    πŸ“š Subject:Botany
    πŸ“‘ Chapter:Molecular Basis of Inheritance
    🎯Topic:Dna
    πŸŽ“ Ncert Level:Remembering
    🎯Difficulty :Easy
    ⚑ Time Required :2 mins
    πŸ”„Ncert Concepts :Nucleosides, Nitrogenous bases, Biochemistry

    4.

    Which property is NOT essential for a biomolecule to act as genetic material?

    A

    Able to replicate accurately

    B

    Capable of storing information

    C

    Susceptible to mutations

    D

    Completely chemically inert

    Question Tags
    πŸ“š Subject:Botany
    πŸ“‘ Chapter:Molecular Basis of Inheritance
    🎯Topic:Dna
    PYQ YEAR: 2016
    πŸŽ“ Ncert Level:Application
    🎯Difficulty :Medium
    ⚑ Time Required :1 mins
    πŸ”„Ncert Concepts :Genetics, DNA, RNA

    5.

    If the length of DNA in a mammalian cell is about 2.2 meters and there are 6.6imes1096.6 imes 10^9 base pairs, what is the approximate distance between two consecutive base pairs?

    A

    0.34 nm

    B

    3.4 nm

    C

    34 nm

    D

    0.034 nm

    Question Tags
    πŸ“š Subject:Botany
    πŸ“‘ Chapter:Molecular Basis of Inheritance
    🎯Topic:Dna
    PYQ YEAR: 2020
    πŸŽ“ Ncert Level:Application
    🎯Difficulty :Medium
    ⚑ Time Required :2 mins
    πŸ”„Ncert Concepts :DNA structure, unit conversion

    6.

    The length of DNA in bacteriophage Ο•imes174\phi imes 174

    A

    5386  bp5386\,\,bp

    B

    48502  bp48502\,\,bp

    C

    4.6imes106bp4.6 imes {10^6}bp

    D

    3.3imes109bp3.3 imes {10^9}bp

    Question Tags
    πŸ“š Subject:Botany
    πŸ“‘ Chapter:Molecular Basis of Inheritance
    🎯Topic:Dna
    πŸŽ“ Ncert Level:Remembering
    🎯Difficulty :Medium
    ⚑ Time Required :1 mins
    πŸ”„Ncert Concepts :Bacteriophage DNA length, Genome size

    7.

    A bacterial chromosome has 4.6imes1064.6 imes 10^6 base pairs. Calculate the approximate length of this chromosome in micrometers, given that the distance between base pairs is 0.34 nm.

    A

    1564 micrometers

    B

    1.564 micrometers

    C

    4.6 micrometers

    D

    0.34 micrometers

    Question Tags
    πŸ“š Subject:Botany
    πŸ“‘ Chapter:Molecular Basis of Inheritance
    🎯Topic:Dna
    PYQ YEAR: 2022
    πŸŽ“ Ncert Level:Application
    🎯Difficulty :Hard
    ⚑ Time Required :3 mins
    πŸ”„Ncert Concepts :DNA Structure, Base Pairing, Unit Conversion

    8.

    Double helix model for the structure of DNA was proposed by?

    A

    Watson and Crick

    B

    Wilkins and Franklin

    C

    Crick and Wilkins

    D

    Franklin and Watson

    Question Tags
    πŸ“š Subject:Botany
    πŸ“‘ Chapter:Molecular Basis of Inheritance
    🎯Topic:Dna
    πŸŽ“ Ncert Level:Remembering
    🎯Difficulty :Medium
    ⚑ Time Required :1 mins
    πŸ”„Ncert Concepts :DNA structure, scientific discovery

    9.

    The following ratio is generally constant for a given species

    A

    A+G/C+T

    B

    T+C/G+A

    C

    G+C/A+T

    D

    A+C/T+G

    Question Tags
    πŸ“š Subject:Botany
    πŸ“‘ Chapter:Molecular Basis of Inheritance
    🎯Topic:Dna
    πŸŽ“ Ncert Level:Remembering
    🎯Difficulty :Medium
    ⚑ Time Required :1 mins
    πŸ”„Ncert Concepts :DNA base pairing, Chargaff's rules

    10.

    In DNA helix presence of hydrogen bonds was first observed by?

    A

    Watson

    B

    Crick

    C

    Pauling

    D

    All

    Question Tags
    πŸ“š Subject:Botany
    πŸ“‘ Chapter:Molecular Basis of Inheritance
    🎯Topic:Dna
    πŸŽ“ Ncert Level:Remembering
    🎯Difficulty :Medium
    ⚑ Time Required :1 mins
    πŸ”„Ncert Concepts :DNA structure, hydrogen bonds, history of science

    company logo

    NEET Subjects

    Our Bots

    Company