Keep in mind that properly vented ventilation fans also suck a lot of heated air out of your house. A remedy is to install a heat-exchange ventilator fan. These fans use warm, outgoing air to heat cooler, incoming replacement air.
The size of a typical bacterial cell is 0.5-5.0 micrometers, a average human cell is 10 micrometers. 8 people found this useful.
1 Viruses are the smallest and simplest life form known. 2  They are 10 to 100 times smaller than bacteria. 3  The biggest difference between viruses and bacteria is that viruses must have a living host-like a plant or animal-to multiply, while most bacteria can grow on non-living surfaces.