BIO153H5 Chapter Final: BIO153H5 exam review -all the chapter readings-
Document Summary
Pro/eukaryotic cells range : 0. 001 - 0. 05 mm in diameter -- only very largest cells (0. 1mm) Ocular (eye piece): - most have magnification of 10x. 1 ocular = monocular - 1 eye piece. 2 ocular = binocular - 2 eye pieces. Some oculars have pointer to determine size of specimen. Nosepiece: holds objectives and revolves - revolve nose-piece to change objectives. Objectives: lenses attached to nosepiece - do not touch objective lenses - have diff magnification stamped on them. Scanning objective: shortest objective, view larger specimen - 4x magnification. Low power objective: for coarse/preliminary focusing - 10x magnification. High power objective: for final/fine focusing - 40 x magnification of object. Oil immersion objective (not on microscope) - magnification of 100x. Oil optical properties used for better viewing of specimen - after use, oil immersion objective must be wiped and cleaned to prevent build up/contamination of other objectives.
