12.4 Mechanisms of Disinfection

Question 1

chlorine -
- must penetrate into the _____ to cause inactivation
- in bacteria, r________, t________ and n_______ a______ are all adversely affected
- in bacteriophage, disruption of the viral n_________ a________
- in poliovirus, the p_______ c_______ is affected

Answer 1

cell, respiration, transport, nucleic acid, nucleic acid, protein coat

Question 2

chlorine dioxide -
- inactivation of bacteria is attributed to disruption of p_________
- inactivation of virus, disruption of c__________ functions

Answer 2

protein, capsid

Question 3

ozone -
- inactivation of bacteria and poliovirus is physiochemical damage to _______ which includes attack on bacterial membrane, disruption of e_________ a_______ and n________ a___________
- inactivation of virus is disruption to virion c_________

Answer 3

DNA, enzymatic activity, nucleic acids,
capsid

Question 4

UV radiation -
- causes deleterious changes in microorganism n______ a_______
- if DNA adsorbs too much UV light, it will be damaged and unable to __________
- if a microorganism cannot reproduce, it cannot cause an i______

Answer 4

nucleic acid, replicate, infection