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Science Quiz – Test 19

Science quiz, test 19 of 19: 10 multiple-choice questions with answers. Try them, then play the interactive quiz on Zeno to earn XP.

  1. Question 181

    What is the primary source of energy for the majority of life forms on Earth?

    • A Chemical energy from minerals
    • B Nuclear reactions
    • C The Sun
    • D Geothermal vents
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    Correct answer: The Sun

  2. Question 182

    What is the primary pigment responsible for the green color in plants, which plays a crucial role in photosynthesis?

    • A Melanin
    • B Carotene
    • C Chlorophyll
    • D Xanthophyll
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    Correct answer: Chlorophyll

  3. Question 183

    What is the primary source of energy for nearly all ecosystems on Earth?

    • A The Sun
    • B Wind energy
    • C Nuclear power
    • D Geothermal energy
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    Correct answer: The Sun

  4. Question 184

    What is the process by which green plants convert light energy into chemical energy?

    • A Photosynthesis
    • B Transmutation
    • C Chemosynthesis
    • D Radiolysis
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    Correct answer: Photosynthesis

  5. Question 185

    What is the basic structural unit of DNA that carries genetic information?

    • A Nucleotide
    • B RNA
    • C Chromosome
    • D Gene
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    Correct answer: Nucleotide

  6. Question 186

    What is the process by which certain bacteria convert nitrogen gas into ammonia in the soil?

    • A Nitrification
    • B Nitrogen fixation
    • C Ammonification
    • D Denitrification
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    Correct answer: Nitrogen fixation

  7. Question 187

    What is the chemical element with the symbol 'O'?

    • A Osmium
    • B Olivine
    • C Oxygen
    • D Oganesson
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    Correct answer: Oxygen

  8. Question 188

    Which of the following is a method used for carbon capture and storage in industrial applications?

    • A Pre-combustion capture
    • B Post-combustion capture
    • C Direct air capture
    • D Biochar application
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    Correct answer: Post-combustion capture

  9. Question 189

    What is the primary process by which an organism converts glucose into energy in the presence of oxygen?

    • A Cellular respiration
    • B Lactic acid production
    • C Photosynthesis
    • D Fermentation
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    Correct answer: Cellular respiration

  10. Question 190

    What is the chemical element with the symbol 'H'?

    • A Oxygen
    • B Helium
    • C Carbon
    • D Hydrogen
    Show answer

    Correct answer: Hydrogen

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