PHYSL210A- Midterm Exam Guide - Comprehensive Notes for the exam ( 13 pages long!)
5 Oct 2017
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Smallest unit that still carries out all of life"s processes. Obtaining nutrients, converting to energy, communicating, reproducing, growth, etc. How they serve the organism to which they belong. Separating the icf from the ecf and maintains uid differences such as ion concentrations which drive many membrane controlled processes. Speci c signalling molecules and receptors on the surface. Selectively permeable and facilitates transport in and out of the cell. Nucleus, oval shaped in centre with dna. Cytoplasm, outside nucleus containing organelles and cytosol (gel) Surround the cell and most intracellular organelles. Only 2-5% of the membrane in a cell is the plasma membrane. Allows for separation and specialization for isolated processes. All composed of a double layer of lipids with embedded proteins. Primarily carbon and hydrogen linked by non-polar bonds. Oxygen and phosphates may be present and create polarity. Amphipathic (both polar and non polar regions)
