20140562
Descripción
Test por John Loughlin, actualizado hace más de 1 año
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Creado por John Loughlin
hace más de 4 años
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Pregunta 1
Pregunta
Which of the following is the optimum pH for catalase in celery?
Respuesta
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3
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7
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10
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13
Pregunta 2
Pregunta
Which of the following substances is the substrate for catalase?
Respuesta
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Water
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Oxygen
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Hydrogen peroxide
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Hydrochloric acid
Pregunta 3
Pregunta
Washing up liquid is necessary in the enzyme experiments in order to:
Respuesta
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Keep the glassware clean
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Trap the oxygen produced
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To ensure a colour change
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To maintain the pH
Pregunta 4
Pregunta
How many molecules of hydrogen peroxide can catalase break down per second?
Respuesta
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40
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40 thousand
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40 million
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40 billion
Pregunta 5
Pregunta
What is the function of pH buffer?
Respuesta
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To change the pH of a solution
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To maintain the pH of a solution at a set value
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To cause the enzyme to break down the hydrogen peroxide
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To keep the temperature of the solution the same
Pregunta 6
Pregunta
The function of a water bath is:
Respuesta
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To change the temperature of solutions
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To maintain the temperature of a solution at a set value
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To maintain the pH of a solution
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To cause the enzyme to break down the substrate
Pregunta 7
Pregunta
What substance did you use to immobilise yeast cells?
Respuesta
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Alginate
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Algae
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Agar
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Jelly
Pregunta 8
Pregunta
What substance did you use to solidify the beads of immobilised yeast?
Respuesta
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Sodium chloride
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Magnesium chloride
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Potassium chloride
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Calcium chloride
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