microscopes

Question 1

light microcopes magnification

Answer 1

Light microscopes can magnify objects up to around x1,500

Question 2

how does a light microscope work ?

Answer 2

Light microscopes magnify images of objects by using glass lenses to focus light onto or through the object

Question 3

light microscopes resolution

Answer 3

0.2 micrometres

Question 4

light microscope 2d or 3d images

Answer 4

2d

Question 5

light microscope living or dead samples ?

Answer 5

living cells

Question 6

SEM how does it work

Answer 6

by scanning a sample with a beam of electrons and collecting the signals produced to create an image

Question 7

magnification of sem

Answer 7

can magnify objects from 10 to 500,000 times.

Question 8

resolution of sem

Answer 8

1–2 nanometres

Question 9

2d or 3d sem ?

Answer 9

3d

Question 10

sem living or dead samples

Answer 10

dead samples

Question 11

what can be seen under an SEM

Answer 11

cell membranes, endoplasmic reticulum, ribosomes, lysosomes, and mitochondria can be seen

Question 12

what can be seen under a light microscope

Answer 12

cell walls, vacuoles, cytoplasm, chloroplasts, nucleus and cell membrane

Question 13

how does a TEM work

Answer 13

use a beam of electrons to create high-resolution images of thin samples

Question 14

3d or 2d images TEM

Answer 14

both

Question 15

magnification of TEM

Answer 15

TEMs have a maximum magnification of around x1,000,000

Question 16

resolution of TEM

Answer 16

typically less than 1 nanometre (nm)

Question 17

living or dead samples TEM

Answer 17

TEM cannot be used to visualise living material. Only thin tissues also

Question 18

what can be seen under a TEM

Answer 18

The cell wall, nucleus, vacuoles, mitochondria, endoplasmic reticulum, Golgi apparatus, and ribosomes