Using Microorganisms

Question 1

Fermentation

Answer 1

Using the anaerobic (without oxygen) respiration of microorganisms to make useful products

Question 2

Biotechnology

Answer 2

Using living organisms (mainly microorganisms) to make products useful to humans

Question 3

Pausterised

Answer 3

The process by which harmful organisms, pathogenic bacteria and viruses in liquids are eliminated by heating it to a critical temperature (85-89 degrees C) for a specified amount of time (15-30 min). When a liquid is pasteurised there are a number of neutral or beneficial organisms remaining, as opposed to sterilisation, which destroys all life forms

Question 4

Homogenised

Answer 4

Milk with the lipid particles broken up and dispersed uniformly so the cream will not rise

Question 5

Coagulate

Answer 5

A process involving the denaturation of proteins, the loss of their native, soluble structure, so that they become insoluble; it may be affected by heat, strong acids and alkalis, metals and other chemicals

Question 6

Aseptic precautions

Answer 6

The methods used to prevent contamination by unwanted microorganisms , such as filtering the air and sterilising the fermenter with his pressure steam