What is microbiology?
Specialized area of biology that deals with microorganism
What is a microorganism?
Microscopic organism that exist as single cells, cell clusters or viruses.
What are the three main areas where microorganism can be found?
Spoilage,
Foodborne illness
Food transformation
What are three problems with food spoilage?
The sustainable issue,
cost -by throwing away effect food is costly
the possibility of causing illness.
What did Antonie van Leeuwenhoek do?
He was the first to actually see bacteria with the microscope.
What is the meaning of spontaneous generation?
Is the idea of that living organism could be formed from non-living matter e.g. dirt, sand etc.
However, by sterilizing a liquid in a flask by heating and then putting the flask so the liquid was in level with part of tube that been “infected” by dirt and microorganism. This made microorganism growing in the liquid again.
Showed that microorganism are present in the air and is not form from non-living matter.
What is the five contributes by Pasteur?
- Disproving spontaneous generation hypothesis.
- Air contains microorganisms.
- Fermentation is a biological process
- Vaccins (anthrax)
- Germ theory of disease.
What is the five contributes by Koch?
- The pathogenic organism should be present in all cases of the disease and dosent in healthy animals.
- The organism should be grown in pure culture.
- The cells from pure culture should cause disease in healthy animals.
- Organism should be re-isolated and be the source as the orginal.
What is the eight different reasons that microorganism is favorable to work with?
- Fast reproduction
- Easy to culture
- Large number of identical organism
- simpler than other higher organisms.
- No ethical question in killing them
- Easy to manipulate
- Large possibilities in genetic modifications
- pathways are conserved.
What is the meaning of habitat?
Location in an environment where microbial population live.
What is the meaning of microbial communities?
In most of the cases microbiol population cooperate.
What is the meaning of ecosystem?
An ecosystem includes living organisms together with the physical and chemical constituents of their environment.
