Microscopes

Question 1

Purpose of microscope

Answer 1

Used to view cells

Asses health by looking for abnormalities

Question 2

Compound light microscope

Answer 2

Use light focussed through different lenses to form a magnified image of a specimen or object
Commonly found in science classrooms

Question 3

Electron microscope

Answer 3

Use a beam of electrons instead of light

Question 4

TEM

Answer 4

Transmission Electron microscope
Can magnify up to 1 500 000 times
Beam travels down column through the specimen
Cannot see living only dead
Beam of electron passes through thin slice

Question 5

SEM

Answer 5

Provides info on surface features
Magnify up to 300 000 times
Produces 3D images
Scanning electron microscope

Question 6

Electron micrograph

Answer 6

A photograph taken by sem or tem

Detailed info on surfa texture shape size and arrangement of materials

Question 7

STM and AFM

Answer 7

Scanning tunneling microscope
Atomic force microscope
Produce images of molecules within cells
Understand structure and functions

Question 8

First microscope magnification

Answer 8

20

Question 9

Compound magnification

Answer 9

1000-2000

Question 10

Micrograph

Answer 10

A photo take through a microscope

Shows magnified image of the specimen camera attached instead of eye piece

Question 11

Resolution

Answer 11

The ability to distinguish between 2 objects that are very close together

Question 12

Contrast purpose

Answer 12

Difficult to see the parts of the cell
Some pale and transparent background
Improves images

Question 13

Common contrast stains

Answer 13

Methylene blue

Iodine

Question 14

Fluorescence microscopy

Answer 14

Flurorescent substances added to the cells

Glows in ultraviolet light