HTHSCI 1H06 Lecture Notes - Membrane Transport Protein, Lipid Bilayer, Cell Membrane

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The building blocks for biological form and structure. Robert hooke: first person to use the word cell . Human cell: 100 microns (just enough for human eyes to see) Including atoms, the smallest units of matter that participate in chemical reactions and molecules. (two or more atoms joined together) Cellular level: molecules combine to form cells, the basic structural and functional units of an organism that are composed of chemicals. Tissue level: tissues are groups of cells and the materials surrounding them that work together to perform a particular function. Organs: structures that are composed of two or more different types of tissues. Systems: a system consists of related organs working together. All the parts of the body functioning together constitute the local organism. Need optimal volume to move nutrients such as oxygen, nitrogen and carbon dioxide in and out of the cell. How is cellular organization achieved: plasma membrane, nucleus, cytoplasm and organelles.

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