1.

    Which histone is absent in nucleosomecore.

    A

    H1{H_1}

    B

    H2B{H_2}B

    C

    H2A{H_2}A

    D

    H4{H_4}

    Question Tags
    📚 Subject:Botany
    📑 Chapter:Molecular Basis of Inheritance
    🎯Topic:Dna
    🎓 Ncert Level:Remembering
    🎯Difficulty :Medium
    ⚡ Time Required :1 mins
    🔄Ncert Concepts :histones, nucleosome, chromatin

    Related Questions

    1.

    Transcriptionally active chromatin is

    A

    Euchromatin

    B

    Heterochromatin

    C

    Both

    D

    None

    Question Tags
    📚 Subject:Botany
    📑 Chapter:Molecular Basis of Inheritance
    🎯Topic:Dna
    🎓 Ncert Level:Remembering
    🎯Difficulty :Medium
    ⚡ Time Required :1 mins
    🔄Ncert Concepts :chromatin structure, transcription, euchromatin, heterochromatin

    2.

    In DNA, which of the following is absent?

    A

    Adenine

    B

    Thymine

    C

    Guanine

    D

    Uracil

    Question Tags
    📚 Subject:Botany
    📑 Chapter:Molecular Basis of Inheritance
    🎯Topic:Dna
    🎓 Ncert Level:Remembering
    🎯Difficulty :Easy
    ⚡ Time Required :1 mins
    🔄Ncert Concepts :DNA structure, nitrogenous bases

    3.

    An analysis of a DNA (double strandard) sample yielded 18% cytosine. What would be the percentage of other bases in this sample?

    A

    T- 32%, A-32%, G-18%

    B

    T-32%, A-18 %, G-32%

    C

    T-18%, A-32%, G-32%

    D

    T-40%, A-22%, G-20%

    Question Tags
    📚 Subject:Botany
    📑 Chapter:Molecular Basis of Inheritance
    🎯Topic:Dna
    🎓 Ncert Level:Application
    🎯Difficulty :Easy
    ⚡ Time Required :2 mins
    🔄Ncert Concepts :DNA base pairing, Chargaff's rules

    4.

    The distance between two base pairs in DNA is

    A

    34Å

    B

    3.4Å

    C

    0.34Å

    D

    20Å

    Question Tags
    📚 Subject:Botany
    📑 Chapter:Molecular Basis of Inheritance
    🎯Topic:Dna
    🎓 Ncert Level:Remembering
    🎯Difficulty :Easy
    ⚡ Time Required :1 mins
    🔄Ncert Concepts :DNA structure, base pairing, angstrom unit

    5.

    Read the following statements w.r.t. B-DNA (A) Backbone is formed by the sugar-phosphate sugar chain (B) The two strands of polynucleotides are antiparallel (C) At each step of ascent, the strand turns 360{36^0} (D) The rise per base pair would be 34 A034\,\mathop A\limits^0 How many statements are correct?

    A

    1

    B

    2

    C

    3

    D

    4

    Question Tags
    📚 Subject:Botany
    📑 Chapter:Molecular Basis of Inheritance
    🎯Topic:Dna
    🎓 Ncert Level:Understanding
    🎯Difficulty :Medium
    ⚡ Time Required :2 mins
    🔄Ncert Concepts :B-DNA structure, nucleotide structure, antiparallel strands, helical twist, base pair distance

    6.

    Which one of the following statements about Histones is wrong?

    A

    Histones are positively charged proteins.

    B

    Histones help in packaging of DNA in eukaryotes.

    C

    There are five main types of histones.

    D

    Histones are found in prokaryotic cells.

    Question Tags
    📚 Subject:Botany
    📑 Chapter:Molecular Basis of Inheritance
    🎯Topic:Dna
    🎓 Ncert Level:Understanding
    🎯Difficulty :Medium
    ⚡ Time Required :2 mins
    🔄Ncert Concepts :Histones, Amino acids, Protein structure, pH

    7.

    If a DNA molecule contains 22% Thymine, what is the percentage of Guanine?

    A

    22%

    B

    28%

    C

    30%

    D

    44%

    Question Tags
    📚 Subject:Botany
    📑 Chapter:Molecular Basis of Inheritance
    🎯Topic:Dna
    PYQ YEAR: 2021
    🎓 Ncert Level:Application
    🎯Difficulty :Medium
    ⚡ Time Required :2 mins
    🔄Ncert Concepts :DNA, Chargaff's Rule, Base Pairing

    8.

    Which one of the following is not applicable to RNA?

    A

    Chargaff’s rule

    B

    Complementary base pairing

    C

    5’ phosphoryl and 3’ hydroxyl ends

    D

    Heterocyclic nitrogenous bases

    Question Tags
    📚 Subject:Botany
    📑 Chapter:Molecular Basis of Inheritance
    🎯Topic:Dna
    🎓 Ncert Level:Understanding
    🎯Difficulty :Medium
    ⚡ Time Required :2 mins
    🔄Ncert Concepts :RNA structure, Chargaff's rule, complementary base pairing, 5' and 3' ends, heterocyclic bases

    9.

    The number of hydrogen bonds between adenine and thymine in a DNA molecule is

    A

    Two

    B

    Three

    C

    Four

    D

    Eight

    Question Tags
    📚 Subject:Botany
    📑 Chapter:Molecular Basis of Inheritance
    🎯Topic:Dna
    🎓 Ncert Level:Remembering
    🎯Difficulty :Easy
    ⚡ Time Required :1 mins
    🔄Ncert Concepts :DNA structure, hydrogen bonding, base pairing

    10.

    A double-stranded DNA molecule has 20% Cytosine. What is the percentage of Adenine in this DNA?

    A

    30%

    B

    20%

    C

    40%

    D

    10%

    Question Tags
    📚 Subject:Botany
    📑 Chapter:Molecular Basis of Inheritance
    🎯Topic:Dna
    PYQ YEAR: 2021
    🎓 Ncert Level:Application
    🎯Difficulty :Medium
    ⚡ Time Required :2 mins
    🔄Ncert Concepts :DNA, Chargaff's Rule, Base Pairing

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