BIOL 150B Study Guide - Comprehensive Final Guide: Intermediate Filament, Photorespiration, Endomembrane System

• School: University of Victoria
• Department: Biology
• Course: BIOL 150B
• Professor: Rossi Marx

Document Summary

Concludes that all cells come from previously existing cells. Cells perform an enormous variety of function including obtaining energy and nutrients, synthesizing biological molecules, eliminating wastes, interacting with other cells, and reproducing. Diffusion: process by which molecules dissolved in fluids disperse from regions where their concentration is higher to regions where concentrations are lower. To meet the constant demands of cells, the interior of the cell must remain close to the external environment, keeping the cell small. Plasma membrane: each cell is surrounded by an extremely thin, rather fluid membrane. All the membranes consist of a double layer (bilayer) of phospholipids and cholesterol molecules many different proteins embedded within bilayer. Important functions include: ele(cid:272)ti(cid:448)el(cid:455) isolati(cid:374)g the (cid:272)ell"s (cid:272)o(cid:374)te(cid:374)ts fro(cid:373) the e(cid:454)ter(cid:374)al e(cid:374)(cid:448)iro(cid:374)(cid:373)e(cid:374)t, regulating the flow of materials into and out of the cell, allowing communication with other cells and with the extracellular environment.