BIOL 2051 Chapter : Biol 2051 Chapter 2 Notes
Document Summary
In library on first floor at reserve desk: Microbiology: an evolving science- call number is rx52. Size of prokaryotes: prokaryotes are generally smaller than eukaryotes (there are some exceptions, small size allows nutrients to reach all pats of cell quickly, prokaryotic cells can be as small as 0. 2 m. The smallest eukaryotic cells are 2 m: __cocci (spherical shaped)____- typically have diameter of 2 m, some microbiologists have proposed that bacteria smaller than 0. 2 m exist in nature, cells. Microscopy: simple microscopes, one lens, magnify 50 300x, compound microscopes, multiple lenses, much higher magnification, ones in 2051 lab magnify 1000x. In each objective are multiple lenses: ocular lens system, closest to the eye, typically magnify 10x, each ocular has _multiple_ lenses. Resolution: ability to distinguish between 2 objects that are close together. Correct each other"s aberrations or imperfections: use shorter wavelengths of light. Blue is shortest wavelength so gives highest resolution.
