2.1.1 Cell Structure

Question 1

what are the four key types of microscopes?

Answer 1

1. light microscopes
2. transmission electron microscopes
3. scanning electron microscopes
4. laser scanning confocal microscopes

Question 2

what are the slide preparations methods for a light microscope?

Answer 2

1. **dry mounts **
2. wet mounts
3. squash slides
4. smear slides

Question 3

what is a dry mount preparation?

Answer 3

Dry mounts are when thin slices or whole specimens are
viewed with just the coverslip placed on top e.g. plant tissue or hair.

Question 4

what is a wet mount preparation?

Answer 4

Wet mounts are when** water** is added to the specimen
before lowering the coverslip with a mounted needle to
prevent air bubbles from forming. Aquatic organisms
could be viewed this way.

Question 5

what is a squash slide preparation?

Answer 5

Squash slides are wet mounts which you then push
down on the coverslip to squash the sample to*** ensure
you have a thin layer to enable light to pass through. *