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Cell Essay

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Below is an essay on "Cell" from Anti Essays, your source for research papers, essays, and term paper examples.

The difference between a plant cell and animal cell is:
Plant Cells:

* have chloroplasts and use photosynthesis to produce food
* have cell wall made of cellulose
* A plant cell has plasmodesmata - microscopic channels which traverse the cell walls of the cells
* one very large vacuole in the center
* are rectangular in shape

Animal Cells:

* don't have chloroplast
* no cell wall (only cell membrane)
* No plasmodesmata
* one small vacuole
* either circular, irregular or defined shapes depending on the type of cell

The structures and functions are:
Cell membrane - the thin layer of protein and fat that surrounds the cell. The cell membrane is semi permeable, allowing some substances to pass into the cell and blocking others.

centrosome - (also called the "microtubule organizing center") a small body located near the nucleus - it has a dense center and radiating tubules. The centrosomes is where microtubules are made. During cell division (mitosis), the centrosome divides and the two parts move to opposite sides of the dividing cell. The centriole is the dense center of the centrosome.

Cytoplasm - the jellylike material outside the cell nucleus in which the organelles are located.

Golgi body - (also called the Golgi apparatus or golgi complex) a flattened, layered, sac-like organelle that looks like a stack of pancakes and is located near the nucleus. It produces the membranes that surround the lysosomes. The Golgi body packages proteins and carbohydrates into membrane-bound vesicles for "export" from the cell.

lysosome - (also called cell vesicles) round organelles surrounded by a membrane and containing digestive enzymes. This is where the digestion of cell nutrients takes place.

mitochondrion - spherical to rod-shaped organelles with a double membrane. The inner membrane is infolded many times, forming a series of projections (called cristae). The mitochondrion converts the energy stored in glucose into ATP (adenosine...

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