Technologies

Question 1

Light Microscope

Answer 1

Light passes through the condenser lens and then through the specimen

Living and non-living specimens can be viewed using a light microscope.

Question 2

Electron Microscope

Answer 2

Uses electron beams and electromagnets instead of light rays and lenses.
Non-living specimens can be viewed with an electron microscope.
Uses a vacuum.
Two Types:
TEM - produces a 2-dimensional image of cells’ internal composition and structures. Very high magnification
SEM - creates a 3-dimensional image of the surface of cells. Lower magnification

Question 3

Cell Theory

Answer 3

1. All living things are made of cells.
2. Cells are the basic structural and functional unit of organisms.
3. All cells come from pre-existing cells.

Question 4

Cell Culturing

Answer 4

Cells are grown under controlled conditions in vitro (meaning in glass) by replicating natural conditions.
Each method is specialised and will depend on the organism produced.

Example - Agar Plates