Health And Social Care Level 3 Unit 3 P3

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Pages: 8

Microbiology – P3

Safety procedure are carried out in an isolated environment like a microbiology lab due to handling microorganisms. This is because the labs main objective is to confine an infectious organism or toxin. This helps reduce the potential exposure risk from affecting lab work or people outside the lab another reason for this is because it’s a risk exposure if they are accidentally released into the environment.
Positive biocontainment – is used to prevent contamination by using aseptic techniques on microbiological samples as this helps protect the sample.
Negative biocontainment is the protection from exposing pathogens in a lab environment for example the special clothing that is worn. This helps protect the operators and the environment. Another example of this is the use of clean air cabinets and laminar flow. Microbiologists use aseptic techniques and safety equipment’s to follow out a code of conduct. To prevent pathogens from
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Oxygen helps obligate aerobes which is an organism to grow. To obtain their energy the organism carries out aerobic respiration. On the other hand, organisms like microaerophiles require a low concentration of oxygen at around 2-10%, to grow through aerobic respiration. This is how they obtain their oxygen. To synthesise proteins, amino acids , DNA and RNA nitrogen is used. Nitrogen fixing bacteria is the bacteria that obtains nitrogen directly from the atmosphere. An essential element is phosphorus for nucleic acid to synthesise and for phospholipids to construct. During the process of cellular respiration oxygen is used by aerobic bacteria. For aerobic microbe’s energy producing properties oxygen is essential. If there is absence of oxygens facultative microbes are grown. If there is a low concentration of oxygen microbes that grow with this are microaerophilic which means they are grown in environments rich in