Cells

Animal cells

Animal cells consist of three main components: nucleus, cytoplasm and cell membrane.

Nucleus
A main component of the cell that contains genetic information and controls the cell's function and its processses.
Cytoplasm
The biggest part of the cell where reactions take place
Cell membrane
Controls what enters and leaves the cell.
A typical animal cell

Plant cells

Plant cells are different from animal cells by adding few more components.

Cell wall
Supports the shape of the cell
Chloroplasts
Contain chlorophyll for light absorption for photosynthesis
Vacuole
Contains cell sap and helps support the cell
A typical plant cell

Other cells

A wide variety of cells that do different functions.

Red blood cell

Red blood cells are contained in the blood and are used to transport oxygen around the body.
It's features:

  1. Is made up of heamoglobine, which weakly bonds with oxygen for transportation.
  2. Large surface area - to adopt more oxygen
  3. Does not have a nucleus - saves space and can easily pass through cells, such as villi
A red blood cell

White blood cell

Is used to destroy the microbes that have entered the body. Works well because it can change the shape.

Root hair cell

Ovum/Egg celll

Contains large amount of reserves before is fertilised for the development of the embryo.

Sperm cell

Has a tail for swimming and is used to fertilise the ovum.