Microscope

Question 1

Magnification Equation

Answer 1

Magnification = eyepiece lens magnification * objective lens magnification

Question 2

Why stain cells?

Answer 2

Many cells are colourless, stain cells to make it easier to observe.

Question 3

List of common stain

Answer 3

• Methylene blue
• Iodine solution
• Crystal violet

Question 4

What’s the purpose of using methylene blue ?

Answer 4

To see nucleus of an animal cell

Question 5

What’s the purpose of using iodine solution?

Answer 5

To see plant cell nuclei

Question 6

What’s the purpose of using crystal violet ?

Answer 6

to see bacterial cell wall

Question 7

List 2 types of electron microscope.

Answer 7

1. Transmission electron microscope
2. Scanning electron microscope

Question 8

What images can Transmission electron microscope produce?

Answer 8

Produce most magnified images.

Question 9

What images can Scanning electron microscope produce?

Answer 9

Produce 3D images

Question 10

Comparison of Light Microscope vs Electron Microscope

Answer 10

Light Microscope
* Cheap
* Specimens Living/Dead
* Lower Resolution

Electron Microscope
* Expensive
* Dead Specimens
* Higher Resolution