Biosafety and Biosecurity Flashcards
(41 cards)
Preventing lab-acquired infections
Biosafety
Containment principles, technologies, and practices that are implemented to prevent the intentional exposure to pathogens
Biosecurity
It is a potential for harm
Hazard
Give the three categories of hazard
Chemical-can affect skin by contact
Physical- can cause injury or risks on our body
Biological- pose harm to the health of living organisms
Classification of biological hazard
Bacteria
Viruses
Fungi
This is the level of biological hazard that means bacteria and viruses that causes mild symptoms.
Level 2
Level of biological hazard means bacteria and microorganisms that are relatively harmless to human.
Level 1
It is a biohazard that have severe or fatal symptoms treated by vaccines.
Level 3
Can cause severe illness or death in human but not treated by vaccines
Level 4
It’s a levels of containment that used to handle microorganisms that don’t consistently cause disease in human adults
Biosafety level 1
Used to handle microorganisms that have serious illness and diseases.
Biosafety level 3
It is used to handle agents associated with human disease.
Biosafety level 2
Chemical substance produced by microorganisms that inhibits growth or kills other microorganisms
Antibiotics
Antimicrobial, inactivate proteins and most effective of all chemical disinfectants
Aldehydes
A treatment that kills or removes all living cells.
Sterilization
Reduction of microbial population to levels considered safe by public health standards.
Sanitation
A treatment that reduces total number of microbes but does not necessarily remove or kill all the microbes.
Disinfection
A mild disinfectant agent suitable for use on skin surfaces
Antiseptic
Damages cell components, DNA enzyme, cytoplasmic membrane
Physical Methods
It kills microbes by denaturing enzymes
Heat
Different physical methods
Heat
Temperature
Desiccation
Osmotic pressure
Filtration
Radiation
It is the lowest temperature to kill all bacteria in 10 minutes
Thermal Death Point
Time required for the cell to be killed in certain temperature.
Thermal Death Time
Decreasing temperatures decreases chemical and enzyme activity
Low temperatures
