1.

    The Hershey-Chase experiment provided definitive evidence that DNA is the genetic material. Which of the following best describes their experimental approach?

    A

    Observing bacterial transformation using purified protein extracts

    B

    Analyzing the chemical composition of chromosomes

    C

    Radioactively labeling phage DNA and protein to track their fate during infection

    D

    Studying the inheritance patterns of mutant bacteria

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

    Related Questions

    1.

    Which molecule carries the genetic information in bacteriophages?

    A

    DNA

    B

    RNA

    C

    Protein

    D

    Lipids

    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 :Bacteriophage, DNA, Genetic Material

    2.

    The Hershey-Chase experiment utilized radioactive isotopes to label different components of bacteriophages. Which of the following combinations accurately reflects the isotopes used and the components they labeled?

    A

    32P for protein and 35S for DNA

    B

    35S for both DNA and protein

    C

    32P for DNA and 35S for protein

    D

    32P for both DNA and protein

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

    3.

    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

    4.

    Which enzyme was used by Avery, MacLeod and McCarty to prove that DNA is the genetic material?

    A

    RNase

    B

    Protease

    C

    DNase

    D

    Lipase

    Question Tags
    📚 Subject:Botany
    📑 Chapter:Molecular Basis of Inheritance
    🎯Topic:The Search Of Genetic Material
    🎓 Ncert Level:Application
    🎯Difficulty :Medium
    ⚡ Time Required :1 mins
    🔄Ncert Concepts :Avery-MacLeod-McCarty experiment, DNA, Enzymes

    5.

    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

    6.

    Which of the following is NOT a characteristic of a good genetic material?

    A

    Able to replicate accurately

    B

    Chemically and structurally stable

    C

    Must be easily degradable

    D

    Scope for slow changes (mutations)

    Question Tags
    📚 Subject:Botany
    📑 Chapter:Molecular Basis of Inheritance
    🎯Topic:The Search Of Genetic Material
    🎓 Ncert Level:Understanding
    🎯Difficulty :Medium
    ⚡ Time Required :1 mins
    🔄Ncert Concepts :Genetic Material, DNA characteristics

    7.

    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

    8.

    Which observation from Griffith's experiment with Streptococcus pneumoniae provided the strongest evidence for the existence of a 'transforming principle'?

    A

    Live non-virulent bacteria did not cause disease in mice.

    B

    Heat-killed virulent bacteria did not cause disease in mice.

    C

    Live virulent bacteria caused disease in mice.

    D

    Heat-killed virulent bacteria, when mixed with live non-virulent bacteria, caused the latter to become virulent.

    Question Tags
    📚 Subject:Botany
    📑 Chapter:Molecular Basis of Inheritance
    🎯Topic:The Search Of Genetic Material
    🎓 Ncert Level:Analyzing
    🎯Difficulty :Hard
    ⚡ Time Required :1 mins
    🔄Ncert Concepts :Griffith's Experiment, Transforming Principle, Bacterial Transformation, Genetic Material

    9.

    What radioactive element was used to label the protein part of the bacteriophage in the Hershey-Chase experiment?

    A

    Sulfur (35S)

    B

    Phosphorus (32P)

    C

    Nitrogen (15N)

    D

    Carbon (14C)

    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 :Hershey-Chase Experiment, Radioactive Labeling, DNA, Protein

    10.

    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

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