Parts and its functions (microscopes) Flashcards
Arm
Is used to support the microscope when carried.
Stage clips
holds slides in place
fine adjustment knob
moves the stage slightly to sharpen image.
ocular lens
you look through to see the specimen
Diaphragm
Is used to control the amount of light on the specimen
Base
supports the microscope
stage
supports the slide being viewed
objective lenses
magnification ranges form 4x, 10x, 40x
light source
projects light upwards through the diaphragm, the specimen, and the lenses
coarse adjustment knob
moves the stage up and down for focusing
revolving nosepiece
hold the lenses, that rotate to change magnification.
cell theory
two main ideas
- all living things are compose of one or more cells
- all new cells are made from cells that already exist.
characteristics of all living things
all composed of cells, all reproduce/grow, need energy, respond to the environment, lifespan, produce waste.