Microscopes

Question 1

Mag. Def.

Answer 1

Making image larger the the real thing

Question 2

Stain

Answer 2

Increases contrast

Question 3

Resolution

Answer 3

Clarity of image

Question 4

Iodine

Answer 4

Plant/Methylene blue - animals

Question 5

Triangle

Answer 5

I

A M

Question 6

Microscope Total Mag. =

Answer 6

Eyepiece Lens x Objective Lens

Question 7

MAG(Drawing)=

Answer 7

I/A ~ Image/Actual Size

Question 8

A(Actual Size)=

Answer 8

I/M - Image size/Magnification

Question 9

Dis. Light Mic.

Answer 9

Limited Mag&Res

Question 10

Dis. Electron Mic

Answer 10

Can only study dead cells
Can only be seen in black and white
Expensive

Question 11

Ads. Light Mic.

Answer 11

Portable
Easy to use
Can see living cells
No harsh chem. to be used

Question 12

Ads. Electron Mic.

Answer 12

Greater Mag&Res

Question 13

How does the light Mic. see it’s specimen?

Answer 13

Light Rays

Question 14

How does the Electron Mic. see it’s specimen?

Answer 14

Beams of high speed electrons to produce an image on flourescent screens

Question 15

How does the light Mic. focus on the specimen?

Answer 15

Glass Lense

Question 16

How does the electron Mic. focus on it’s specimen?

Answer 16

Electromagnets

Question 17

Explain why ribosomes are not visible using a light microscope.

Answer 17

Ribosomes have a diameter of 25nm which is smaller than half. The wavelength of visible light and the light microscope only has a resolution of 200nm.