4.1.1.5 Microscopy

Question 1

What do microscopes allow us to do?

Answer 1

• see things we can’t see with the naked eye

Question 2

What do light microscopes do?

Answer 2

• use light and lenses to form an image of a specimen and magnify it
• let us see individual cell and large subcellular structures like nuclei

Question 3

What do electron microscopes do?

Answer 3

• use electrons to form an image
• have a higher resolution
• give a sharper image
• let us see smaller things in more detail like internal structures of subcellular structures (or smaller ones)

Question 4

What two lenses does a light microscope have?

Answer 4

• objective lens
• eyepiece lens

Question 5

What does the objective lens do?

Answer 5

• produce a magnified image

Question 6

What does an eyepiece lens do?

Answer 6

• magnify the magnified image and direct it into the eye

Question 7

What does the resolving power affect?

Answer 7

• the resolution
• the ability to distinguish between two points

Question 8

What does a lower resolution power mean?

Answer 8

• less detail is seen

Question 9

How do you calculate magnification?

Answer 9

• magnification = image size / real size

Question 10

What is useful when using a smaller objects length?

Answer 10

• write length/numbers in standard form