MMBio 222 Final Questions with Complete Solutions

Know the lower limit of resolution for the light microscope Correct Answer-0.2 um Total magnification vs magnification of the oil immersion lens Correct Answer-Total magnification: product of the magnification of the ocular (10x) and the objective lens Oil immersion lens Define Resolving power Correct Answer-the ability of a microscope to differentiate two closelyk spaced objects as being distinct from one another Know how resolving power relates to magnification Correct Answer-Resolving power increases as magnification of the lens increases Define parfocal Correct Answer-a specimen in focus under the low power objectives should be nearly in focus under the oil immersion objective as well Define Fomite Correct Answer-inanimate objects with microbes Define sterile (as well as examples of what can and cannot be sterile) Correct Answer-free of microbes - human skin cannot be sterile Define aerosol Correct Answer-droplet airborne infections