Biology Lab

Front 1

Longitudal section

Back 1

A lengthwise cut through any specimen

Front 2

Cross section

Back 2

A crosswise cut through any specimen

Front 3

Metric system

Back 3

The standard system of measurement in sciences

Front 4

Micrometer

Back 4

A unit of measurment using the metric system. Measured as .000001

Front 5

Nanometer

Back 5

A unit of measurment using the metric system. Measured .000000001

Front 6

Meniscus

Back 6

The lowest margin of the water level.

Front 7

Light microscope

Back 7

A type of microscope that uses magnified visible light rays and focused by means of lenses

Front 8

Binocular dissecting microscope

Back 8

A type of light microscopeused to study entire objects in 3D

Front 9

Compound light microscope

Back 9

A type of light microscope used to examine thinly sliced sections of objects under a higher magnification than the binocular microscope.

Front 10

Photomigraph

Back 10

A photograph of an image produced by a compound light microscope

Front 11

Electron Microscope

Back 11

A type of microscope that use beams of electrons magnified and focused on a photographic plate to view objects giving us greater detail than light microscope

Front 12

Transmission electron Microscope
(TEM)

Back 12

A type of electron microscope that is
1. Analogous to compound light microscope
2. view specimens treated with heavy metals
3. uses electromagnetic lenses
4.Illumination due to a beam of electrons
5. Resolution = 0.1 nm
6. magnifies to 1,000,000X

Front 13

Scanning electron Microscope
(SEM)

Back 13

1. Analougous to dissecting light microscope
2. Used to view surface and dimensions of an object

Front 14

Occular lenses

Back 14

Eyepieces
our lab microscope has 10X power in the occular lenses

Front 15

Body tube

Back 15

Holds the nosepiece at one end and eyepiece at the other end; conducts light rays.

Front 16

Arm

Back 16

Supports upper parts and provides carrying handle

Front 17

Nosepiece

Back 17

Revolving device that holds objectives

Front 18

Scanning power objectives

Back 18

The shortest of the objective lenses and is used to scan the whole slide.
Our lab is 4X

Front 19

Low-power objective

Back 19

The lens that is longer than the scanning lens and used to view objects in greater detail.
Our lab is 10X

Front 20

High power objective

Back 20

Longest objective lens.
Our lab has 40x, 43X, 45X

Front 21

Course adjustment knob

Back 21

Knob used to bring object into approximate focus; used only with scanning and low power objectives.

Front 22

Fine adjustment knob

Back 22

Knob used to bring object into final focus

Front 23

Condensor

Back 23

Lens system below the stage used to focus the beam of light on the object being viewed.

Front 24

Diaphragm or diaphragm control lever

Back 24

Controls the amount of illumination used to view the object.

Front 25

Light source

Back 25

An attached lamp that directs a beam of light up through the object.

Front 26

Base

Back 26

The flat surface of the microscope that rest on the table

Front 27

Stage

Back 27

Holds and supports the microscope slides

Front 28

Stage clips

Back 28

Holds slides in place on the stage

Front 29

Mechanical stage

Back 29

(optional feature)
A stage with stage clips that can be positioned using mechanical stage control knobs

Front 30

Mechanical stage control knobs

Back 30

Two knobs usually located below the stage. One know controls forward reverse and the other right left movement.

Front 31

Parfocal

Back 31

Term of compound light microscopes meaning once the object is in focus with the lowest power it should also be almost in focus with the higher power.