Algae Biofuel Quiz

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  • 1/12 Questions

    Algae can be grown only in seawater.

    • True
    • False
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Here is a quiz to test your knowledge about Algae Biofuel!

Algae Biofuel Quiz - Quiz

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  • 2. 

    Why is Algae environmentally friendly?

    • Yes, it does not produce carbon dioxide at all

    • Yes, it is carbon neutral and may even reduce carbon impact by 70%

    • None of the above

    Correct Answer
    A. Yes, it is carbon neutral and may even reduce carbon impact by 70%
    Explanation
    Algae does produce carbon dioxide, but it is carbon neutral so algae is environmentally friendly

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  • 3. 

    Biofuels are carbon-neutral. What does this mean?

    • It does not release carbon dioxide into the atmosphere at all

    • It recycles the carbon content already in the atmosphere

    • It is chemically inert to carbon

    Correct Answer
    A. It recycles the carbon content already in the atmosphere
    Explanation
    Check it out here: http://www2.hci.edu.sg/y11hci0149/Website/advantagesalgae.html#carbonneutral

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  • 4. 

    Algae cannot be used as:

    • Fertiliser

    • Biomass

    • Something for removing salt from seawater

    • Food

    Correct Answer
    A. Something for removing salt from seawater
    Explanation
    Algae cannot be used for removing salt from seawater because they do not have the ability to desalinate water. While algae can be used as a fertilizer, biomass, and food source, they do not possess the necessary mechanisms to remove salt from seawater.

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  • 5. 

    The main reason why open ponds have to be shallow is because:  

    • It saves money

    • It maximises sunlight taken in by the algae

    • It saves space

    • It maximises nutrients taken in by the algae

    Correct Answer
    A. It maximises sunlight taken in by the algae
    Explanation
    Open ponds need to be shallow in order to maximize sunlight taken in by the algae. Sunlight is essential for photosynthesis, the process by which algae convert sunlight into energy. By keeping the ponds shallow, more sunlight can penetrate the water and reach the algae, allowing them to photosynthesize and grow more efficiently. This maximization of sunlight helps to optimize the growth and productivity of the algae, making shallow open ponds the preferred choice for cultivating algae.

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  • 6. 

    Algae cannot be grown in:

    • Ponds

    • Sea

    • Wastewater

    • All of the above

    • None of the above

    Correct Answer
    A. None of the above
    Explanation
    Algae can be grown virtually anywhere as long as there is water, carbon dioxide and sunlight.
    This includes ponds and even seawater and wastewater. It can also be grown in photobioreactors (also known as PBRs).

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  • 7. 

    Harvesting is:

    • Separating algae from its medium (oil)

    • Separating oil from the algae

    • Separating algae from its medium (water)

    Correct Answer
    A. Separating algae from its medium (water)
    Explanation
    Check it out on the site: http://www2.hci.edu.sg/y11hci0149/website/algae.html#harvesting

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  • 8. 

    Algae has a yield close to that of peanuts.

    • True

    • False

    Correct Answer
    A. False
    Explanation
    Peanut has a yield of only 113 gallons of oil per acre per year. Algae on the other hand has close to 20 000 gallons per acre per year, more than a hundred times that the yield of peanut
    Check it out here: http://www2.hci.edu.sg/y11hci0149/website/algae.html#other biofuel

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  • 9. 

    The growth cycle of algae is:

    • 3 months

    • 30 days

    • 10 days

    • 4 weeks

    Correct Answer
    A. 10 days
    Explanation
    Algae can be cultivated and harvested within 10 days.
    Other types of biofuels, like corn, on the other hand may take weeks or even months to grow.
    Check it out here: http://www2.hci.edu.sg/y11hci0149/Website/advantagesalgae.html#advantage4

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  • 10. 

    The oil yield from algae is high because:

    • It has a lot of lipids

    • It has a short cultivation cycle

    • All of the above

    Correct Answer
    A. It has a lot of lipids
    Explanation
    Algae has a lot of lipids. In fact, pond algae (also known as pond scum), with the highest yield of all strains, has 60% of its weight being oil
    Check it out here: http://www2.hci.edu.sg/y11hci0149/Website/advantagesalgae.html#advantage3

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  • 11. 

    Which of the following about closed pond systems is false?

    • It solves most of the problems of a open pond

    • It is just an open pond system with a greenhouse to close it off

    • It is just as complex as an open pond system

    Correct Answer
    A. It is just as complex as an open pond system
    Explanation
    A closed pond is just a open pond closed off using a greenhouse. It also solves most of the problems that are being faced in a open pond, like allowing better control over the environment. However, it has a system more complex than a open pond with the addition of a greenhouse, but less than a photobioreactor.

    Check it out here: http://www2.hci.edu.sg/y11hci0149/website/algae.html#cultivation

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  • 12. 

    Which of these methods can be used to extract algae?

    • Oil press

    • Chemical solvent

    • Microwave-assisted

    • Carbon dioxide as a solvent

    • Burning

    • Washing under water

    Correct Answer(s)
    A. Oil press
    A. Chemical solvent
    A. Carbon dioxide as a solvent
    Explanation
    Apart from the three forms of extraction: Oil press, Chemical Solvent and Supercritical Fluid (CO2), there is still another type of extraction method - Ultrasonic assisted extraction

    Check it out here: http://www2.hci.edu.sg/y11hci0149/website/algae.html#Extraction

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  • Current Version
  • Aug 07, 2024
    Quiz Edited by
    ProProfs Editorial Team
  • Jun 03, 2011
    Quiz Created by
    Samleo
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