BIOL 3200 Midterm: chapter 2
Document Summary
4x = scanning (large area/little detail, largest diameter opening) 100x = oil immersion (oil immersion will etch other powers, oil helps keep the light going straight up through the system keeps light from being refracted when traveling which increases resolution/clarity does not increase the magnification) ** diameters continue to get smaller as you go up in power. Cocci (coccus) ~ singles are common, the others are rare. They reproduce quickly and in certain patterns (all but single); genetics control cell division into 3 planes: single , single cells, not attached to any other cell, ex: leptospira (genus names . capitalized) Ex. - acne, respiratory problems: chinese letters are . Rare ~ few organisms can form this arrangement. Changed in genetics of corynebacterium to form different shapes. Live in cold or acidic atmospheres or anywhere extreme. No hard and fast numbers, lots of varia- tion. They are large enough that you can see them with the natural eye.
