Cell Strcuture

Animal cells - All animals are made up of cells, these cells are 'eukaryotic', meaning that they have a nucleus and other structures that are surrounded by membranes.

Nucleus - The nucleus contains genetic material, including DNA, which controls the cell's activities.

Cytoplasm - A jelly-like substance that contains dissolved nutrients and salts and structures called organelles. This is where a lot of reactions take place. This can be seen under a light microscope.

Mitochondria - This is where cellular respiration occurs, it takes in nutrients from the cell, breaks it down and releases it as energy.

Cell Membrane - This is a layer around the cell that is permeable to some substances, therefore controlling what enters and leaves the cell.

Ribosomes - These are very small structures where protein synthesis occurs.

Plant cells - Plant cells are also eukaryotic, meaning that they have a nucleus and other structures that are surrounded by membranes.

Animal and plant cells have several structures in common (listed above), there a few that are specific to plant cells and animal cells, however:

Cell wall - Provides structure and protection for the cell, only plant cell walls are made from cellulose.

Chloroplast - This is the green organelle that absorbs light energy for photosynthesis, it also contains the enzymes required for photosynthesis. 

Permanent vacuole - This is filled with cell sap to keep the cell swollen (turgid)


Image credit - Wikibooks
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