Portage Microbiology Lecture Exam 3 Questions With Verified Answers

Portage Microbiology Lecture Exam 3 Questions With Verified Answers micrometer one millionth of a meter nanometer one billionth of a meter two critical factors that influence our ability to see an object resolution and contrast resolution the distance between two objects at which the objects still can be seen as separate contrast the difference in light absorbance between two (objects) the closer two objects are to each other the __________________ the resolution requirement greater the ________________ the contrast between an object and its background, the harder it will be to see the object lower bright field microscope simplest form of light, or optical, microscopy/light, most often emitted from a standard halogen bulb, enters the microscope from the base (bottom) and is reflected via mirrors towards the sample before the light reaches the sample, it first passes through a ________________ converging the light beams into a focused area on the sample condenser iris diaphragm controls the amount of light that passes through the sample and into the objective lens objective lens