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.
The Single Cell I'm going to start with unicellular organisms. A bacterium is typically 4-8 micrometres in length. Yeast is typically 3-4 micrometres in diameter, but the largest yeast cells can be up to 40 micrometres. A human ovum is 0.1mm in diameter. The largest bacterium known is Thiomargarita namibiensis, which can be up to 0.75mm in diameter, and can be seen with the naked eye.