1) Which is the least resistant to the use of biocides? A) Vegetative Protozoa B
ID: 268242 • Letter: 1
Question
1) Which is the least resistant to the use of biocides? A) Vegetative Protozoa B) Gram positive bacteria C) Gram negative bacteria D) Prions 2) I have a patient who entered the clinic that has been recently diagnosed with tuberculosis. This patient was also sick with a cold while in my office and had been coughing and sneezing. I want to clean the surface of my desk and chairs before meeting with the next patient. Which of the following would you recommend that I use to clean these surfaces? A) Quaternary ammonium salts (ammonia) B) lodine (betadine) C) Hydrogen Peroxide D) Chlorine bleach 3) Which of the following microbes show resistance to various biocides (radiation, temperature, desiccation, extreme pH; high or low) and is not a pathogen? A) Deinococcus radiodurans B) Mycobacterium tuberculosis C) Naegleria fowleri D) Paracoccus denitrificans 4) Please refer to the following data to determine the substance that is a strong mutagen/carcinogen SUBSTANCE REVERTANTS 35 +/-3 35 +/-4 5 +/-2 28 +/- 10 150 +/-30 Control Substance A Substance B Substance C Substance D A) Substances B, C,D B) Substance B and D C) Substance B D) Substance DExplanation / Answer
Answer 1. ( D ) prions
NOTE :-
A biocides is chemical or micro organism that can exert harmful effect on target organism which should be a living organism.
PRIONS are proteins with altered structures which are infectious particle without any genome. They are not living cells. Bacteria , protozoa are living.
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