lab practical 1

stereomicroscope and the scanning electron can view
surface and or three dimensional of an object

compound light microscope and transmission electron microscope view
extremely thin sections of a specimen

what is a longitudinal section cut
a lengthwise cut through any type of specimen

what is a cross section cut
a crosswise cut through any type of specimen

are biological objects small or large
small

light microscope uses
visible light rays magnified and focused by lenses

stereomicroscope studies
entire objects in 3d and low magnification

compound light microscope used
for examining small or thinly sliced sections of an object under higher magnification

compound refers to
use of two sets of lenses

photomicrograph
photograph of an image produced by compound light microscope

stains or dyes that bind to cellular structures and absorb light
microscopist

minium distance between two objects at which they can still be seen or resolve
Resoilution

do small organisms require low or high magnification
low magnification

compound light microscope are
parfocal

once the object is in focus with the lowest power, it should also be in focus with the higher power
parfocal

how is total magnification calculated
mutiply magnification of ocular lens by the objective lens magnification

what is a microscopes field of view
the circle visible through the lens

what type of microscope would you use to view a Euglena swimming in pond water
compound light microsscope

what are ocular lenses
eyepiece

which part of a microscope controls the amount of light
diaphram

what word is used to indicate that if the object is in focus at low power it will also focus in high power
parfocal

what adjustment knob is used with high power
fine adjustment knob

if euglena is swimming to the left, which way should you move the slide
right

what is the final item placed on a wet mount before viewing with a light microscope
coverslip

what type of object do you study with a stereomicroscope
entire object

why is a stereomicroscope also called a binocular dissecting microscope
each microscope receive its own magnified image and provides depth of field for viewing objects

a virus is 50 nm in size, what type of microscope should be used
scanning electron is below the frequency of light

what advantages does the metric system provide over english units of measure
1. its easier for some to convert
2. also more accurate