Hard biology questions?

Need this in ONE hour (exam)





It is necessary to increase the sterilization time of autoclave when...





There is a small volume of material to be sterilized


The material is porous


Sterilizing dense materials


Sterilizing items that need to be dried


None of the above


Which methods of bacterial reproduction produce “mortal” cells?





Budding


Binary fission


Filamentous


A and C


B and C





Water activity...





Is an index of water available for utilization by microorganisms


Includes a measure of water hydrated to solutions or absorbed to surface


Is measured using its relationship to relative humidity


A and c


All of the above





Quarternary Ammonium compounds are...





Anionic detergents


Alkyl ammonium halides


Most effective against Gram-negative microbes


A and C


B and C

Hard biology questions?
1) none of the above, i don't know





2) i don't know sorry. i'm not sure what you mean by mortal. I would guess budding bacteria because they make unequal cells each time but that doesn't seem to make any sense.





3) A and c





4) A

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