B1

Question 1

Name 7 parts of a microscope

Answer 1

Eyepiece
Eyepiece Tube
Nosepiece.
Objective Lenses.
Arm.
Stage.
Stage Clips.
Diaphragm

Question 2

How do you prepare a microscope in steps? Step 1…

Answer 2

1. Use a dropping pipette to put a drop of water onto a glass slide.

Question 3

Why do you put a drop of water on the glass slide?

Answer 3

This method will help prevent air bubbles from being trapped under the cover slip.

Question 4

Step two..?

Answer 4

Separate one of the thin layers of the onion.

Question 5

Step three..?

Answer 5

Using a pair of forceps, peel off a thin layer of epidermal tissue from the inner surface.

Question 6

Step four..?

Answer 6

Place this thin layer on to the drop of water that you have placed on the microscope
slide.

Question 7

Step five..?

Answer 7

Make sure that the layer of onion cells is flat on the slide.

Question 8

Step 6..?

Answer 8

Put 2-3 drops of iodine solution onto the onion tissue.

Question 9

Then step seven..?

Answer 9

Carefully lower a coverslip onto the slide.

Question 10

Step 8

Answer 10

Use a piece of Blotting paper to soak any excess liquid on the slide.

Question 11

And finaly. Step 9

Answer 11

Put the prepared slide on the microscope stage.