Tips For Biology Paper 5 Exam

Notes on tips for Biology Paper 5 Exam.

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Biology Paper 5 Notes

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CO2:

◦       Usually, most of the CO2 absorbents are with -OH eg: NaOH or KOH

◦       Sources of CO2 are usually those with the -CO3 eg: CaCO3, H2CO3

◦       a non-chemical source: gas cylinder

◦       the gas is supplied through a bubbler.

◦       to measure CO2 concentration: use probe with meter]

Temperature:

◦       method of controlling: use an electronic water-bath (a beaker of boiling water)-depends on the experiment

◦       use an electronic thermostat

◦       heat screen*/ heat filter

*for uniform distribution of heat.

◦       incubator

◦       digital/mercury thermometer

◦       for food tests, such as Benedict's test, the temp must be above 80'C.

Time:

Always mention:

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