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The structure and function of the components of a typical human cell.

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National Diploma in Health Studies Year 1 Unit 4 Fundamentals of Anatomy and Physiology for Health and Social Care Teacher: Hugh Radford Human Body Structure Organisation Sarah-Jane Burke The structure and function of the components of a typical human cell. Cell Membrane The cell membrane holds all the cell components and fluid inside the cell. The cell membrane controls what goes in and out of the cell. Proteins and Phospholipids make up most of the cell membrane. The phospholipids make the basic structure of the membrane and the proteins are found around the holes and help move molecules in and out of the cell. Nucleus The nucleus is a membrane bound organelle and is surrounded by a double membrane. ...read more.


Other ribosomes are found on the Endoplasmic Reticulum. ER's with attached ribosomes are called rough. Those attached ribosomes make proteins that will be used inside the cell and proteins made for export out of the cell. Mitochondria Mitochondria are known as the powerhouses of the cell. They act like a digestive system that takes in nutrients, breaks them down, and creates energy for the cell. Mitochondria are very small. Depending on what the cell needs to do you might find thousands of Mitochondria. Sometimes they can even grow, move, and combine with other mitochondria, depending on the cell's needs. Mitochondria have two membranes, the outer covers and contain the organelle, the inner fold over many times to increase the surface area inside the organelle. ...read more.


They create and store steroids and ions. Rough ER are secreted on ribosomes. They are very important in packaging of proteins. Ribosomes are attached to the membrane of the ER. The ribosome builds the amino acid chain, the chain is pushed into the ER. When the protein is complete, the rough ER pinches off a vesicle. That vesicle can then move to the Golgi body. Golgi Body The Golgi body can be found in most cells and are another packaging organelle. They gather simply molecules to combine them to make complex molecules. These complex molecules are then packaged into vesicles. They are either sent out of the cell or stored for later use. The Golgi body is a series of membranes shaped like pancakes. The membrane surrounds an area of fluid where the complex molecules are stored and changed. Because the Golgi body absorbs vesicles from the rough ER, you will also find ribosomes in them. 1 Sarah-Jane Burke ...read more.

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