Physical Methods of Control: Ultraviolet Radiation Flashcards
1
Q
biocides
A
kills life
2
Q
sterilization
A
destruction of all life including spores
3
Q
mutation
A
change in genetic sequence
4
Q
pyrimidine dimers
A
form buldging in dna by thymines
5
Q
differentiate between the effects of ionizing and non-ionizing radiation
A
Non-ionizing radiation does not lead to ionization Ionizing radiation-leads to ions
6
Q
Know why UVC is more damaging than UVA and UVB waves
A
it has a shorter wavelength
7
Q
the sterilizing limitations of UV
A
the radiation is not very penetrating
8
Q
pigmentation from protection from UV light
and glycolax
A
organisms with darker pigmentation showed more resistance to UV light
prevents penetration
9
Q
role of photolyases in photoreactivation
A
photo repair enzymes that repair mutation
10
Q
heat labile
A
heat sensitive
