August 2016

Experiment: Finding conditions necessary for growth of microorganisms

By |2017-01-17T11:11:42+02:00August 5th, 2016|Notes, O Level Science Notes, Ordinary Level Notes|

Mouldy bread and their conditions. Image credit

Mouldy bread and their conditions. Image credit wordpress.com ZIMSEC O Level Combined Science Notes: Experiment: Finding conditions necessary for growth of microorganisms

Aim: To determine factors affecting the growth of microorganisms in food

Materials:  3 containers with sterilized lids, brad, milk, burners, drying agent (calcium chloride)

Method

  1. Pour […]

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Food Preservation

By |2017-01-17T11:11:42+02:00August 3rd, 2016|Notes, O Level Science Notes, Ordinary Level Notes|

Perishable foods

Perishable foods ZIMSEC O Level Combined Science Notes: Food Preservation
  • A lot of the fresh food that humans eat is perishable
  • This is because this food is also food for bacteria, fungi and other micro-organisms
  • If fresh perishable food is left out in the open it will soon deteriorate […]

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