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Cells Essay

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

This assignment will attempt to discuss the structure and the functions of a human cell and explain how cells are organised to form other structures in the human body.
The plasma membrane is made up of four molecules; phospholipids, cholesterol, proteins and carbohydrates/sugars.
The glycocalyx is important in cell recognition. The structure and types of sugars in the glycocalyx help the body to recognise cells and decided whether they should be there or not. It can also act as a glue to attach cells together.
The phospholipid bi-layer is the arrangement of phospholipids in the cell membrane. The hydrophilic heads are arranged so that they are near water and the hydrophobic tails are arranged in a way that prevents them from mixing with water.
The cell organelles from the diagrams to be discussed are the cell mitochondria, rough endoplasmic reticulum and the golgi apparatus.
The cell mitochondria make energy by transforming food into more practical forms for the cell. Like the nucleus, it has a double membrane. The inner membrane consists of twists and turns that increase the surface area where energy is created. Proteins provide energy.
The rough endoplasmic reticulum has ribosomes attached to it that make proteins which leave the cell. The golgi apparatus is responsible for changing, sorting and packaging proteins that ribosomes make in the R.E.R so they are ready to leave the cell. The golgi apparatus is important to shipping things out of the cell, so is always located near the cell membrane.
The pancreas has more golgi complexes than other cells because pancreatic secretory cells make a vast amount of enzymes, which are proteins, a large number of ribosomes are needed to translate tRNA to protein and an increased amount of golgi to make sure the proteins are ready for secretion by preparing and packaging them.
Autolysis means self-digestion. When associated with the lysosome, the lysosome ruptures inside its cell and the cell is digested and...

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