BIO 1140 Study Guide - Final Guide: Allium, Protoplast, Osmotic Concentration
Document Summary
Lab 1: intro to microscopy & observation of prokaryotic and eukaryotic cells. Image pro express: software that allows you to take digital pictures of your observations under the microscope. We have developed a competency for bright field microscopy throughout these exercises. Revolving nosepiece: supports objective lenses & allows for simple change of magnification. Allows you to move specimen on x and y axes. Coarse focus knob: permits rapid change in distance. You loo through this to see the image. Parafocal = when an object is in focus with one objective, the focus will not be completely lost when changing to the next objective. Condenser: system of lenses that concentrate the light furnished by the illuminator. Condenser height adjustment knob (chak): allows the focus of concentrated light onto the specimen. Aperture iris diaphragm: used to reduce glare from unwanted light by adjusting angle of the cone of light that comes from condenser.
