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    Hi
    I have a couple of questions regarding an experiment I did which involved measuring the rate of anaerobic respiration in Yeast with different substrates, i.e.glucose, sucrose, maltose etc. Temperature was controlled throughout the experiment by using a waterbath.

    Questions are as follows:
    Why did the rate of respirtion for each substrate stay constant?
    What would be a suitable control?
    Explain why you would get anomalies in results?
    Explain how the temperature in the air could affect the results?

    Thanks.
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    (Original post by saadra)
    Hi
    I have a couple of questions regarding an experiment I did which involved measuring the rate of anaerobic respiration in Yeast with different substrates, i.e.glucose, sucrose, maltose etc. Temperature was controlled throughout the experiment by using a waterbath.

    Questions are as follows:
    Why did the rate of respirtion for each substrate stay constant?
    What would be a suitable control?
    Explain why you would get anomalies in results?
    Explain how the temperature in the air could affect the results?

    Thanks.
    Tell us what your thoughts are, we're not here to do your homework for you

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    (Original post by saadra)
    Questions are as follows:
    Why did the rate of respirtion for each substrate stay constant?
    What would be a suitable control?
    Explain why you would get anomalies in results?
    Explain how the temperature in the air could affect the results?

    Thanks.
    Why did the rate of respirtion for each substrate stay constant?
    I HAVE NO CLUE

    What would be a suitable control?
    A test tube with just the yeast suspension solution??

    Explain why you would get anomalies in results?
    student errors, equipment/apparatus malfunction

    Explain how the temperature in the air could affect the results?
    Enzymes work better at an optimum temperature, change in temperature could cause the rate of anerobic resperation to slow down? or if the temperature gets too high, the enzymes could denature.
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    (Original post by saadra)
    Why did the rate of respirtion for each substrate stay constant?
    I HAVE NO CLUE

    What would be a suitable control?
    A test tube with just the yeast suspension solution??

    Explain why you would get anomalies in results?
    student errors, equipment/apparatus malfunction

    Explain how the temperature in the air could affect the results?
    Enzymes work better at an optimum temperature, change in temperature could cause the rate of anerobic resperation to slow down? or if the temperature gets too high, the enzymes could denature.
    Rate of reaction will be the same if something else is limiting it, other than the substrates, this could be the amount of enzymes present, the pH, temperature ect ect.

    I wouldn't say student/human errors, because they happen all the time, and are irrelevant. A better thing to say is measurements are subjective(for example, you are waiting for a solid to form, different people will say it is formed at different stages/some people have faster reactions then others).

    Your answer is fine here, but I highlighted the bit in bold, you will sometimes have to specify whether a hotter temperature will increase the rate of reaction, or a colder temperature will decrease the rate of reaction ect ect.(P.S your answer was fine )

    Hope that helped
 
 
 
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