1.

    The first enzyme on the primitive earth was/were

    A

    Proteins

    B

    DNA

    C

    RNA

    D

    Amino acids

    Question Tags
    📚 Subject:Zoology
    📑 Chapter:Genetic Evolution
    🎯Topic:Origin Of Life
    🎓 Ncert Level:Remembering
    🎯Difficulty :Easy
    âš¡ Time Required :1 mins
    🔄Ncert Concepts :Origin of Life, Enzymes, RNA World Hypothesis

    Related Questions

    1.

    Which one of the following amino acid was not found to be synthesized in Miller’s experiment?

    A

    Glycine

    B

    Aspartic acid

    C

    Glutamic acid

    D

    Alanine

    Question Tags
    📚 Subject:Zoology
    📑 Chapter:Genetic Evolution
    🎯Topic:Origin Of Life
    🎓 Ncert Level:Remembering
    🎯Difficulty :Easy
    âš¡ Time Required :1 mins
    🔄Ncert Concepts :Miller-Urey experiment, amino acid synthesis

    2.

    Which macromolecule is believed to have been the first genetic material?

    A

    DNA

    B

    Protein

    C

    RNA

    D

    Carbohydrate

    Question Tags
    📚 Subject:Zoology
    📑 Chapter:Genetic Evolution
    🎯Topic:Origin Of Life
    🎓 Ncert Level:Understanding
    🎯Difficulty :Medium
    âš¡ Time Required :1 mins
    🔄Ncert Concepts :Origin of Life, RNA world hypothesis, Genetic material

    3.

    According to one of the most accepted theory, the earth atmosphere before any life had originated consists of H2O,H2,NH2{{\rm{H}}_2}{\rm{O}},{{\rm{H}}_2},{\rm{N}}{{\rm{H}}_2} and

    A

    CH4{\rm{C}}{{\rm{H}}_4}

    B

    O2{{\rm{O}}_2}

    C

    N2{{\rm{N}}_2}

    D

    None of these

    Question Tags
    📚 Subject:Zoology
    📑 Chapter:Genetic Evolution
    🎯Topic:Origin Of Life
    🎓 Ncert Level:Remembering
    🎯Difficulty :Easy
    âš¡ Time Required :1 mins
    🔄Ncert Concepts :Early Earth Atmosphere, Chemical Composition, Origin of Life

    4.

    The gases condensed under …A… and formed the galaxies of the present day universe. In the solar system of the milky way galaxy, earth was supposed to have been formed about …B… back. There was no atmosphere …C… on the earth. Water vapour, …D… carbon dioxide and ammonia released from molten mass covered the surface.

    Choose the correct option for A, B, C and D to complete the given paragraph with reference to NCERT textbook

    A

    A-Gravitation, B-4.5 billion years, C-Early, D-Methane

    B

    A-Acceleration, B-4.5 billion years, C-Early, D-Methane

    C

    A-Acceleration, B-4.5 billion years, C-Early, D-Ethane

    D

    A-Gravitation, B-4.5 billion years, C-Early, D-Ethane

    Question Tags
    📚 Subject:Zoology
    📑 Chapter:Genetic Evolution
    🎯Topic:Origin Of Life
    🎓 Ncert Level:Remembering
    🎯Difficulty :Medium
    âš¡ Time Required :2 mins
    🔄Ncert Concepts :Gravitation, Formation of Earth, Early Atmosphere, Gases in Early Atmosphere

    5.

    Coacervates were experimentally produced by

    A

    Sydney Fox

    B

    Oparin and Haldane

    C

    Miller and Urey

    D

    Spallanzani and Needham

    Question Tags
    📚 Subject:Zoology
    📑 Chapter:Genetic Evolution
    🎯Topic:Origin Of Life
    🎓 Ncert Level:Remembering
    🎯Difficulty :Medium
    âš¡ Time Required :1 mins
    🔄Ncert Concepts :coacervates, origin of life, experimental biology

    6.

    The evolution of which metabolic process significantly altered Earth's atmospheric composition?

    A

    Chemosynthesis

    B

    Fermentation

    C

    Photosynthesis

    D

    Respiration

    Question Tags
    📚 Subject:Zoology
    📑 Chapter:Genetic Evolution
    🎯Topic:Origin Of Life
    🎓 Ncert Level:Understanding
    🎯Difficulty :Medium
    âš¡ Time Required :1 mins
    🔄Ncert Concepts :Origin of Life, Photosynthesis, Atmospheric evolution

    7.

    Choose the incorrect option w.r.t. origin and evolution of life

    A

    Early Earth's atmosphere was reducing.

    B

    Early Earth's atmosphere was oxidizing.

    C

    Organic molecules can form spontaneously under reducing conditions.

    D

    The presence of free oxygen would have hindered the formation of organic molecules.

    Question Tags
    📚 Subject:Zoology
    📑 Chapter:Genetic Evolution
    🎯Topic:Origin Of Life
    🎓 Ncert Level:Analyzing
    🎯Difficulty :Medium
    âš¡ Time Required :2 mins
    🔄Ncert Concepts :Origin of life, Evolution, Darwinism, Mutations, Chemoheterotrophs

    8.

    First life on the earth originated from non-living matters has been explained by

    A

    Theory of biogenesis

    B

    Theory of abiogenesis

    C

    Theory of special creation

    D

    Theory of extraterrestrial origin

    Question Tags
    📚 Subject:Zoology
    📑 Chapter:Genetic Evolution
    🎯Topic:Origin Of Life
    🎓 Ncert Level:Remembering
    🎯Difficulty :Easy
    âš¡ Time Required :1 mins
    🔄Ncert Concepts :Abiogenesis, Biogenesis, Origin of Life

    9.

    Origin of life as a result of chemical evolution was properly explained by

    I. Fox II. Oparin

    III. Wateson IV. Haeckel

    V. Mendel VI. Crick

    Choose the correct option

    A

    I and II

    B

    III and IV

    C

    V and VI

    D

    Only II

    Question Tags
    📚 Subject:Zoology
    📑 Chapter:Genetic Evolution
    🎯Topic:Origin Of Life
    🎓 Ncert Level:Remembering
    🎯Difficulty :Easy
    âš¡ Time Required :2 mins
    🔄Ncert Concepts :Chemical Evolution, Origin of Life, Scientists Contributions

    10.

    The first life on earth consists of

    A

    Single-celled prokaryotes (bacteria and archaea)

    B

    Multicellular eukaryotes (plants and animals)

    C

    Viruses

    D

    Complex proteins

    Question Tags
    📚 Subject:Zoology
    📑 Chapter:Genetic Evolution
    🎯Topic:Origin Of Life
    🎓 Ncert Level:Remembering
    🎯Difficulty :Easy
    âš¡ Time Required :1 mins
    🔄Ncert Concepts :Origin of Life, Early Life Forms

    company logo

    NEET Subjects

    Our Bots

    Company