B1.1.3

Question 1

Equation of magnification

Answer 1

Total magnification = eyepiece lens x objective lens

Question 2

Magnification other equation

Answer 2

Magnification = image size/ actual size

Question 3

What must you do in order to see cellular structures?

Answer 3

You must stain them.
Methylene blue - makes it easier to see the nucleus of the animal cell.
Iodine - makes it easier to see plant cell nuclei
Crystal violet - makes it easier to see bacterial cell walls

Question 4

Steps for using a microscope

Answer 4

1) move stage to lowest position
2) Select objective lens with lowest magnification
3) Place the slide on the stage
4) Raise the stage to the highest point without making it touch the lens
5) Lower the stage using the coarse focus until you see your object
6) Turn the fine focus knob slowly until it comes into clear focus
7) To see the cells in greater detail, switch to a higher magnification