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Biology

10th

grade

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IGCSE Biology Review ?s (Extended) s.22/43

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10 questions

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  • 1. Multiple Choice
    30 seconds
    1 pt

    You are testing for an unknown substance. You use iodine and it turns black. What does the substance contain?

    starch

    reducing sugar

    protein

    lipids

  • 2. Multiple Choice
    30 seconds
    1 pt

    What are two materials needed to be added to a fermenter to produce penicillin?

    protein and fat

    glucose and protein

    amino acid and fat

    glucose and ions (salts)

  • 3. Multiple Choice
    30 seconds
    1 pt
    Image

    Why does the fermenter have a gas outflow pipe? (gas out)

    add nutrients and water

    mix the gas with the nutrients

    release gas and prevent fermenter exploding

    prevent contamination and mix nutrients with solution

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