Microscopes

Biology 107

Name_____________

Section___________

_______1. The objective lens?

______ 2. The eyepiece lens?

______ 3. Fine focusing knob? 

______ 4. Iris diaphragm lever?

_______5. Light control knob?

_______ 6. Slide clamps?

________ 7. What are the two ways in which the light can be adjusted?

                   A. _______________________________________

                    B. _______________________________________

_________ 8. What is the total magnification if the eyepiece lens is ten power and the objective lens is 100 power?

__________ 9. Should you center the image in the visual field before changing power?

___________10. If the iris diaphragm is wide open would that give you more or less depth of field?

____________11. A live mount always requires what placed on top of it between the specimen and the cover slip?

                           12. Describe the shape of a cheek cell: _________________________

_____________________________________________________________________

_____________13. Can you see the nucleus without using a stain?

______________14. What is one of the main functions of the nucleus?

                              15. When viewing Daphnia, why did you use methyl cellulose?

_____________________________________________________________________

                              16. Label the drawing to the right:

                        A. __________________

                        B.___________________

                        C. ___________________

                         D. ___________________

_______________17. The snails were most probably eating what?

18. Label the dissecting microscope to the right:

                        A. _______________________

                        B. ________________________

                        C. ________________________

                        D. _________________________