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Lab #3

Cytology and Microscope

Eyepiece Contains a lens, a pointer may be built into the eyepiece
Arm Used for carrying the microscope
Base The bottom of the microscope
Nosepiece The objectives are attached to the nosepiece which revolves to allow usage of all objectives
Objectives The magnifying capabilities of the objective lenses are found etched on the surface.
Scanning objective Used to scan a slide to locate a particular organism or structure - 40X
Low power objective Used for closer observations
High power objective For the most detailed study of material
Mechanical stage Holds the slides in place
Coarse adjustment knob Used to find objects to be viewed
Fine adjustment knob used for precise focusing
Condenser control, field diaphragm and rheostat control All used to control light
On/off switch uhhhh DUH!!!
Ocular lens magnification 10X
Scanning objective magnification 4X (red, 4.6), total 40X
Low power objective 10X (yellow, 1.8), total 100X
High power objective 40X (blue, .46), total 400X
Cell membrane Semi-permeable, protects the interior contents of the cell, surrounds cytoplasm of the cell
Nucleus Contains hereditary info (DNA) and controls cell growth and reproduction
Chromosomes/chromatin Loose coiled, usable form of DNA
Nucleolus Stores RNA, makes ribosomes
Nuclear membrane Selectively permeable, protects chromatin
Pore Access to DNA for RNA
Cytoplasm Solvent plus organelles, as a whole
Pinocytic vesicle Takes water into cell
Vacuole Temporary storage site (for glucose, amino acids, etc.)
Lysosome Vacuole that has digestive enzymes
Mitochondria "Powerhouse" produces ATP (aerobic energy), has its own DNA
Ribosome Produces protein
Endoplasmic reticulum Stores lipids and glycogen, modifies proteins into glycoproteins
Golgi apparatus Packages proteins, modifies protein, ships them out
Centrosome Waiting for mitosis
Centrioles Directs mitosis
Created by: daydreamer67