Question

Laboratory Final Examination Plesse read cach question carcefully and mark your answers on the scantroe provided. For the True or False questions A-True B-Fas Plcase retam both examination and scantron to the lestructor once you are finished When carrying a microscope to and from your bench your hands should be placed a) one hand on the arm and one under the base b) both hands on the arm ) only one hand should be used under the hase d) both hands under the stage 2- On most microssopes, the inter-ocular distance is chanped a) by simply pailling apart or pushing sogether the oculars b) adjusting the diaphragm c) lowering the nosepiece d) none of the ahove 3- Primary containment is protecting a) the environment external to the laboratory bi the immediate surmundings and personnel in a laboratorfs agents c) a and b d) none of the above For any lightmicroscope, the limit of resolution is about micrometer. a) 0.5 um b)2um c) 0.7 mm d) 0.2 um lens is located at the top of the instrument and consists of 5- The two internal lJenses that have a magnification power of 10x a) ocular b) objective c) stage d) diaphragm A microscope that allows light rays to pass directly to the eye without being deflected by an intervening opaque plate in the condenser is called 6- a) phase contrast microscope b) bright field microscope c) dark field microscope d) fluorescence microscope

Answer 1

1. a. one hand on the arm and one under the base

2. a. by simply pulling apart or pushing together the oculars

3. b. the immediate surrounding and personals in a laboratory against infectious agents

4. a. 0.5 micro meter (range is 0.4 - 0.7 micro meter)

5. a. ocular

6. b. bright field microscope