1.1 The Microscope in Cell Studies

Question 1

Resolution

Answer 1

minimum distance between two points that can be distinguished being separated

Question 2

Magnification

Answer 2

how many times bigger image is compared to an object → X2000 allows to view 1µm in length

Question 3

Light Microscopes

Answer 3

Light Rays travel through air

Question 4

Electron Microscopes

Answer 4

Beams of electrons that travel through a vacuum

Question 5

Parallax errors from Microscopes

Answer 5

• differences in position of an object when viewed from two different sight lines
• to avoid this, observer’s eye & pointer must be perpendicularly lined to the plane (of scale) when reading a scale

Question 6

1 millimetre is equal to how many micrometres

Answer 6

1000 micrometres

Question 7

1 micrometre is equal to how many nanometres

Answer 7

1000 nanometres

Question 8

Electron Microscope Wavelength

Answer 8

1 nanometre

Question 9

Light Microscope Wavelength

Answer 9

400 to 700 nanometres

Question 10

Electron Microscope lenses are made of

Answer 10

Electromagnet Lenses

Question 11

Light Microscope lenses are made of

Answer 11

Glass Lenses

Question 12

Light Microscope maximum magnification

Answer 12

x1500

Question 13

Electron Microscope maximum magnification

Answer 13

x500,000

Question 14

Light Microscope best resolution

Answer 14

200 nanometres

Question 15

Electron Microscope best resolution

Answer 15

0.5 nanometres

Question 16

Light Microscope image formed

Answer 16

• Image formed: colours of stain (normal)

- Can view living and dead specimens

Question 17

Electron Microscope image formed

Answer 17

• Image formed: Monochrome (Black and white)

- Can only view dead specimens