Section 2 - Microscopes

Question 1

A light microscope can magnify objects up to ______ times.

Answer 1

1500

Question 2

If cells have been stained, what structures will you be able to see?

Answer 2

The dark-coloured nucleus surrounded by lighter-coloured cytoplasm. Tiny mitochondria and the black line of the cell membrane are also visible. In plant cells, the cell wall, chloroplasts and the vacuole can be seen.

Question 3

What is the other word for light microscope?

Answer 3

Optical microscope

Question 4

Function of coarse adjustment knob

Answer 4

To bring the specimen roughly into focus

Question 5

Function of fine adjustment knob

Answer 5

To finely tune the focus

Question 6

Function of high and low power objective lenses

Answer 6

To magnify the specimen

Question 7

Function of light

Answer 7

So you can see through the specimen

Question 8

Function of stage

Answer 8

Where you put the microscope slide

Question 9

When was the electron microscope invented, allowing scientists to view the detailed ultrastructure of cells?

Answer 9

1950s

Question 10

An electron microscope can magnify objects more than ____ ____ times.

Answer 10

500 000

Question 11

What do electron microscopes allow scientists to do?

Answer 11

See greater detail than with a light microscope. For example, with an electron microscope you can see the detailed structures inside organelles such as mitochondria and chloroplasts.

Question 12

What is the image that’s recorded by an electron microscope called?

Answer 12

Electron micrograph