1.

    In Griffith's experiment, which strain of Streptococcus pneumoniae caused the death of mice?

    A

    S strain (smooth)

    B

    R strain (rough)

    C

    Heat-killed S strain

    D

    Heat-killed R strain

    Question Tags
    📚 Subject:Botany
    📑 Chapter:Molecular Basis of Inheritance
    🎯Topic:The Search Of Genetic Material
    🎓 Ncert Level:Remembering
    🎯Difficulty :Easy
    ⚡ Time Required :0.5 mins
    🔄Ncert Concepts :Griffith's Experiment, Bacterial Transformation, Streptococcus pneumoniae

    Related Questions

    1.

    In Hershey and Chase experiment the viral DNA can be labelled with?

    A

    32P{}^{32}P

    B

    35P{}^{35}P

    C

    35S{}^{35}S

    D

    23P{}^{23}P

    Question Tags
    📚 Subject:Botany
    📑 Chapter:Molecular Basis of Inheritance
    🎯Topic:The Search Of Genetic Material
    🎓 Ncert Level:Remembering
    🎯Difficulty :Medium
    ⚡ Time Required :1 mins
    🔄Ncert Concepts :Hershey-Chase experiment, DNA labeling, radioactive isotopes

    2.

    Which one of the following is correctly matched?

    A

    Frederick Griffith - Discovered the phenomenon of transformation

    B

    Linus Pauling - Isolated DNA for the first time

    C

    Francis Crick - Proposed one gene-one polypeptide hypothesis

    D

    George Beadle - Proposed the concept of inborn errors

    Question Tags
    📚 Subject:Botany
    📑 Chapter:Molecular Basis of Inheritance
    🎯Topic:The Search Of Genetic Material
    🎓 Ncert Level:Remembering
    🎯Difficulty :Easy
    ⚡ Time Required :2 mins
    🔄Ncert Concepts :scientific discovery, genetics, molecular biology

    3.

    If Hershey and Chase had found both 32P and 35S inside the bacteria, what would have been the conclusion of their experiment regarding the genetic material?

    A

    DNA is the genetic material

    B

    Protein is the genetic material

    C

    Both DNA and protein are the genetic material

    D

    The experiment would be inconclusive regarding which molecule is the genetic material

    Question Tags
    📚 Subject:Botany
    📑 Chapter:Molecular Basis of Inheritance
    🎯Topic:The Search Of Genetic Material
    PYQ YEAR: 2023
    🎓 Ncert Level:Application
    🎯Difficulty :Medium
    ⚡ Time Required :1 mins
    🔄Ncert Concepts :DNA as genetic material, Hershey-Chase experiment

    4.

    What did Griffith observe when he injected a mixture of heat-killed S strain and live R strain bacteria into mice?

    A

    The mice died, and live S strain bacteria were recovered.

    B

    The mice survived.

    C

    The mice died, and live R strain bacteria were recovered.

    D

    The mice survived, and a new strain of bacteria was recovered.

    Question Tags
    📚 Subject:Botany
    📑 Chapter:Molecular Basis of Inheritance
    🎯Topic:The Search Of Genetic Material
    🎓 Ncert Level:Remembering
    🎯Difficulty :Easy
    ⚡ Time Required :0.5 mins
    🔄Ncert Concepts :Griffith's Experiment, Transforming Principle, Bacterial Transformation

    5.

    Which component of the bacteriophage was found inside the bacteria in the Hershey-Chase experiment, confirming DNA as the genetic material?

    A

    Radioactively labeled protein (35S)

    B

    Radioactively labeled DNA (32P)

    C

    Both radioactively labeled protein and DNA

    D

    Neither radioactively labeled protein nor DNA

    Question Tags
    📚 Subject:Botany
    📑 Chapter:Molecular Basis of Inheritance
    🎯Topic:The Search Of Genetic Material
    PYQ YEAR: 2023
    🎓 Ncert Level:Remembering
    🎯Difficulty :Medium
    ⚡ Time Required :1 mins
    🔄Ncert Concepts :DNA as genetic material, Hershey-Chase experiment

    6.

    Radioactive Phages were allowed to attach to?

    A

    Bacteriophage

    B

    E. Coli

    C

    Salmonella

    D

    HIV Virus

    Question Tags
    📚 Subject:Botany
    📑 Chapter:Molecular Basis of Inheritance
    🎯Topic:The Search Of Genetic Material
    🎓 Ncert Level:Remembering
    🎯Difficulty :Medium
    ⚡ Time Required :1 mins
    🔄Ncert Concepts :Bacteriophage, E. Coli, Viral Infection, Molecular Biology

    7.

    In their side by side experiments Hershy and chase incorporated 35S{}^{35}S into?

    A

    Bacterial DNA

    B

    Protein Capsid of Phage

    C

    Cytoplasm of bacteria

    D

    Phage DNA

    Question Tags
    📚 Subject:Botany
    📑 Chapter:Molecular Basis of Inheritance
    🎯Topic:The Search Of Genetic Material
    🎓 Ncert Level:Remembering
    🎯Difficulty :Medium
    ⚡ Time Required :1 mins
    🔄Ncert Concepts :Hershey-Chase experiment, radioactive labeling, bacteriophage structure, protein vs DNA

    8.

    If a segment of double-stranded DNA has 20% adenine, what percentage of guanine would it contain?

    A

    20%

    B

    30%

    C

    40%

    D

    50%

    Question Tags
    📚 Subject:Botany
    📑 Chapter:Molecular Basis of Inheritance
    🎯Topic:The Search Of Genetic Material
    🎓 Ncert Level:Application
    🎯Difficulty :Hard
    ⚡ Time Required :1 mins
    🔄Ncert Concepts :Chargaff's Rule, DNA Base Composition, DNA Structure

    9.

    Griffith conducted his transformation experiments on?

    A

    E. Coli

    B

    Tetracoccus

    C

    Diplococcus

    D

    Penicillin

    Question Tags
    📚 Subject:Botany
    📑 Chapter:Molecular Basis of Inheritance
    🎯Topic:The Search Of Genetic Material
    🎓 Ncert Level:Remembering
    🎯Difficulty :Medium
    ⚡ Time Required :1 mins
    🔄Ncert Concepts :Griffith's transformation experiment, bacterial genetics

    10.

    From his transformation experiment Griffith concluded with transforming principle might be?

    A

    DNA

    B

    Polysaccharide Capsule

    C

    RNA

    D

    None

    Question Tags
    📚 Subject:Botany
    📑 Chapter:Molecular Basis of Inheritance
    🎯Topic:The Search Of Genetic Material
    🎓 Ncert Level:Understanding
    🎯Difficulty :Medium
    ⚡ Time Required :2 mins
    🔄Ncert Concepts :Griffith's experiment, transforming principle, bacterial transformation

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