MMBIO 222 Final Exam BYU Questions with Complete Solutions

*magnification of oil immersion lens Correct Answer-100x 1.25 Lower limit of resolution with a light microscope Correct Answer-.2 um What does parfocal mean? Correct Answer-When you have the object in focus with one objective. It will be visible on all objectives with just a minor adjustment from the fine adjustment knob - a specimen in focus under the low power objectives (4x or 10x) should be nearly in focus under the oil immersion objective as well Relationship between resolving power and magnification of the objective lens? Correct Answer-Resolving power increases as magnification of the objective lens increases - shorter wavelength of light increases resolving power - resolving power also depends on numerical aperture fomite Correct Answer-nonliving object that harbors microorganisms Microbes inhabit Correct Answer-Bothe animate and inanimate environments Human skin is sterile? C