NUFS 009 Lecture Notes - Lecture 2: Cell Metabolism, Capillary, Catalase
25 Sep 2017
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Document Summary
Each cell is a self-contained living entity. Each one of the same type join using intercellular substances to make tissues. One or more tissues combine to form organs. Organs combine to form an organ system. Cells need continuous, flowing energy from carbs, fats, and proteins, water, building supplies (protein and minerals), vitamins (chemical regulators), and oxygen, which enables tissues to properly function. Basic structural and functional unit of life. Have membranes and organelles (that perform specific body functions) Metabolism: chemical process that takes place in body cells. The outside and inside of a cell is separated by the cell (plasma) membrane. Is not an organelle, but holds cellular contents (organelles and cytoplasm) in place, and regulates the flows of substances in and out of the cell. Is a lipid bilayer (double membrane) of phospholipids (water-soluble heads facing the interior and exterior of the cell; tail is tucked into the interior of the membrane act as enzymes.
