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Biology-Related Homework Help Cell Biology Topic started by: oceansweet on Sep 28, 2010



Title: micro
Post by: oceansweet on Sep 28, 2010
True or False...

1. The two major halogens used for disinfection are iodine and chlorine.

2. Ultraviolet light is a type of ionizing radiation.

3. Filtration through membrane filters with a pore size of 0.45 microns will sterilize liquids.

4. Dry-heat sterilization is more effective than wet-heat sterilization.

5. Thermal death point is the lowest temperature that will kill 90% of microbes in a particular liquid suspension in 10 min.


Title: Re: micro
Post by: bio_man on Sep 28, 2010
True or False...

1. The two major halogens used for disinfection are iodine and chlorine.

2. Ultraviolet light is a type of ionizing radiation.

3. Filtration through membrane filters with a pore size of 0.45 microns will sterilize liquids.

I thought it was 0.2-microns, but 0.45 is also used.

4. Dry-heat sterilization is more effective than wet-heat sterilization.

5. Thermal death point is the lowest temperature that will kill 90% of microbes in a particular liquid suspension in 10 min.

Shouldn't it be ALL?


Title: Re: micro
Post by: oceansweet on Sep 28, 2010
thanks for answering, but what does the red and green color stand for? which ones are true and false?


Title: Re: micro
Post by: bio_man on Sep 28, 2010
Sorry about the confusion.

Green = True
Red = False

;D