The Structure And Function Of Cell Organelles

1763 Words Sep 29th, 2014 8 Pages
The Structure and Function of Cell Organelles
Cells are surrounded with a boundary known as the cell surface membrane and as well as holding the cell together, being semi-permeable, it controls the movement of materials across it. Within the cell are a number of structures each which have specific functions. These structures are known as organelles. The cell surface membrane and the membranes of any of the membrane bound organelles described below are made of the same material, a double layer of phospholipid molecules. Within the cell surface membrane, the intracellular space known as the cytoplasm, contains all the organelles and a fluid known as cytosol. Within the cytosol is a network of microtubules and fibres called the cytoskeleton. This cytoskeleton’s main functions are to give support to the cell helping to maintain its shape and aid the movement of organelles. Most cell organelles and structures are common to both animal and plant cells but there are some differences as outlined in the table below.
Organelles + structures Present in animal cells Present in plant cells
Cell surface membrane Yes Yes
Cytoskeleton Yes Yes
Nucleus Yes Yes
Endoplasmic reticulum Yes Yes
Ribosomes Yes Yes
Golgi body Yes Yes
Mitochondria Yes Yes
Lysosomes Yes Rarely ???
Centrioles Yes Not in higher plants
Cell wall No Yes
Chloroplasts No Yes
Vacuole No Yes

The nucleus is the organelle that controls the cell’s activity and can be found in both animal and plant cells. It is bound by a…
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