Microscopes

Question 1

What are the different types of microscopes

Answer 1

Light Microscope

Transmission electron microscope

Scanning electron microscope

Question 2

Describe the characteristics of a light microscope

Answer 2

Creates a magnified image by focusing beams of light through an object into a convex objective lens to create an enlarged image.

Question 3

Describe the characteristics of a transmission electron microscope

Answer 3

Shoots a particle beam of electrons through specimens and create a highly magnified image, up to 2 million times, that also allows for visualisation of internal structures.

Question 4

Describe the characteristics of a scanning electron microscope

Answer 4

SEM creates an image by detecting reflected electrons creating a magnified 3D image.

Question 5

What is the difference between magnification and resolution

Answer 5

Magnification allows the specimen to be larger and resolution allows you to distinguish two objects instead of them blurring together as one.

Question 6

Outline the requirements of a good biological drawing

Answer 6

Sharp pencil as a visual way to increase resolution

Title with the subject of the drawing and lens power.

Include a scale

Do not shade, instead use a stippling technique

Labels can be added ensuring they use straight lines and do not cross