Outside the
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starch is digested by the enzyme amylase.
a student did an investigation on amylase activity.
this is the method used.
1. mix amylase solution and starch suspension at 20 °c in a boiling tube.
2. remove a drop of the mixture every 30 seconds and test it for starch.
3. continue testing every 30 seconds until no starch is detected.
4. repeat the investigation at different temperatures.
1
what apparatus should the student use to control the temperature of the mixture?
[1 mark]

The student should use an incubator to control the temperature of the mixture.

INCUBATOR:

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An incubator.

Explanation:

Most enzymes work best at about 37 °C and start to denature around 40 °C.

Thus, the student should use a laboratory incubator, which is essentially an oven that can heat a biological sample to a set temperature.

This model shown below reaches a maximum temperature of 62° C, and its heat controller maintains temperatures within ± 0.5 °C°.

the "dirty dozen" chemicals banned in an international treaty are formally known as persistent organic pollutants, or pops. the united nations environment program provided this background on what they are and what they can do to humans and wildlife.

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