Science Quiz – Test 3

Science quiz, test 3 of 15: 10 multiple-choice questions with answers. Try them, then play the interactive quiz on Zeno to earn XP.

  1. Question 21

    What is the most abundant element in the Earth's crust?

    • A Iron
    • B Oxygen
    • C Silicon
    • D Aluminum
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    Correct answer: Oxygen

  2. Question 22

    What is the most common element in the human body by mass?

    • A Nitrogen
    • B Oxygen
    • C Hydrogen
    • D Carbon
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    Correct answer: Oxygen

  3. Question 23

    What is the most abundant type of star in the Milky Way galaxy?

    • A Blue giants
    • B Yellow supergiants
    • C White dwarfs
    • D Red dwarfs
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    Correct answer: Red dwarfs

  4. Question 24

    What is the process by which bacteria convert nitrogen gas from the atmosphere into ammonia?

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

  5. Question 25

    What is the primary mechanism by which plants lose water to the atmosphere?

    • A Evaporation
    • B Condensation
    • C Photosynthesis
    • D Transpiration
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    Correct answer: Transpiration

  6. Question 26

    What is the most abundant type of lipid found in cell membranes?

    • A Phospholipids
    • B Triglycerides
    • C Steroids
    • D Cholesterol
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    Correct answer: Phospholipids

  7. Question 27

    What is the most common type of rock found in the Earth's crust?

    • A Granite rock
    • B Sedimentary rock
    • C Metamorphic rock
    • D Igneous rock
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    Correct answer: Igneous rock

  8. Question 28

    What is the process by which plants absorb water from the soil?

    • A Photosynthesis
    • B Osmosis
    • C Transpiration
    • D Respiration
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    Correct answer: Osmosis

  9. Question 29

    What is the name of the process by which certain bacteria convert sulfide compounds into sulfate, contributing to the sulfur cycle?

    • A Sulfur assimilation
    • B Sulfate reduction
    • C Sulfide oxidation
    • D Sulfate assimilation
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    Correct answer: Sulfide oxidation

  10. Question 30

    What is the predominant gas in the Earth's atmosphere?

    • A Nitrogen
    • B Carbon Dioxide
    • C Oxygen
    • D Argon
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    Correct answer: Nitrogen

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