System of a cell

By: Bradley Brenning

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Cell membrane

Controls movement in and out of the cell.A cell membrane can change internal

invironment by moving stuffe across the membrane

Cell wall

The cell wall is a structure that is present in plant cells which surrounds the cells membrane.

This is a feature which helps distroy plants cells from animal cells.

The cell wall is one of the plant cells parts which is composed of polysaccharides which are carbohydrates built from monosaccharides.

Ribosomes

Cells proteins are used as enzymes or as supports for other cell functions.

Ribosomes are the protein builders or the protein synthesizers of the cell.

Chloroplasts

food producers of the cell. They are only found in plant cells and some protosts.

Animal cells do not have chloroplasts. Every green plant you see is working to convert the

energy of the sun into sugars.

Endoplasmic Reticulum

While the nucleus is to act as the cell brainit does not work alone.

It creates a network of membranes found through the whole cell.

Mitochondria

Mitochondria are very small organelles. If the cell feels it is not getting enough energy to

survive, more mitochondria can be created. Sometimes they can even grow, and combine

with other mitochondria, depending on the cell's needs.

Cytoplasm

The cell organelles are suspended in the cytosol. The cytoplasm has many different molecules. Waste products are also dissolved before they

are taken in by vacuoles or sent out of the cell.

Nucleus

The cell nucleus acts like the brain of the cell. It helps control eating, movement, and

reproduction. The nucleus is not always in the center of the

cell. It will be a big dark spot somewhere in the middle of all of the cytoplasm.

You probably won't find it near the edge of a cell because that might be a dangerous place for the nucleus to be.

Nucleolus

Within the nucleus are found chromatin and a structure called the nucleolus.

The nucleolus is a knot of chromatin. It is the nucleolus that manufactures ribosomes

Golgi bodies

The Golgi apparatus is found in most cells. It is another packaging organelle like the

endoplasmic reticulum. It was named after Camillo Golgi. While layers of membranes may look like the

rough ER, they have a very different function.

Lysosomes

You will find organelles called lysosomes in nearly every animal-like eukaryotic cell.

Lysosomes hold enzymes that were created by the cell.

The purpose of the lysosome is to digest things. They might be used to digest food or break down the cell when it dies.

What creates a lysosome? You'll have to visit the Golgi complex for that answer.

Vacuoles

Vacuoles are bubbles that are found in cells. They are found in both animal and plant cells

but are larger in plant cells. Vacuoles might store food or any nutrients a cell

might need to survive. They can even store waste so the rest of the cell

is protected from contamination, and eventually the waste will leave.

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<http://www.biology4kids.com/files/cell_vacuole.html>..