Cell structure and microscopy GapFill

All living organisms, no matter how big or small, are made of  cellsamino acidsorganscarbohydrates. Animals and plants have different kinds of cells, although they share many features, including both having a nucleus and a cell  channelmembranewallorgan for controlling what enters and leaves the cell.

Cells that contain a nucleus are known as  fungivirusesprokaryoteseukaryotes. Other types of cells, that do not contain a nucleus, are known as  plasmidsprokaryoteseukaryotesribosomes, and these are generally much smaller on average. An example of this type of cell is a bacterium. The genetic material in bacterial cells takes the form of  chromosomal DNAchloroplastsmitochondrianuclear DNA or plasmid DNA.

Some structures are present in plant cells that are not found in animal cells. These include a  mitochondrioncell wallnucleuscell membrane, which provides strength to the cells, and  chloroplastsribosomesmitochondrianucleosomes, which are the site of photosynthesis in plant cells. In order to supply energy, plant and animal cells both contain a number of  cell membranesvacuoleschloroplastsmitochondria. They can provide energy for making proteins, which takes place on  cell membranesnucleiribosomeschloroplasts.

The cells inside an organism perform many different roles. They must become  smalleridenticalspecialisedlarger in order to perform these roles. Examples include  spermnervephloemxylem cells, which are the male reproductive cells, and ciliated epithelial cells, which have  thick cell wallslarge nucleismall vacuoleshair-like extensions to waft substances along.

In order to view cells, either  an X-raya microwavea protonan electron or a light  microscopecolorimeterinstrumenttelescope can be used. Both are capable of magnifying cells, but the first type is capable of much higher magnification and  resolutionaccuracyspecialisationcolour, so finer details can be observed.