Microscopy

Question 1

what are microscopes used for

Answer 1

let us see things that we cannot see with the naked eye

Question 2

what is a light microscope

Answer 2

light microscopes use light and lenses to form an image of a specimen and magnify it. they let us see individual cells and large subcellular structures like nuclei

Question 3

what is an electron microscope

Answer 3

they use electrons instead of light to form an image.
they have a much higher magnification than a light microscope
also have a higher resolution
they let us see much smaller things in more detail.

Question 4

how do you calculate magification

Answer 4

magnification = image size / real size

Question 4

an onion cell is viewed under a microscope with x100 magnification. the image of the cell is 7.5mm wide what is the real width of the onion cell. give you answer in micrometers

Answer 4

7.5 / 100 = 0.075mm
0.075 = 75 micrometres

Question 5

revise practical of microscopy

Answer 5

(in book)