BI110 Lecture Notes - Lecture 30: Membrane Transport, Cell Membrane, Passive Transport
Document Summary
Compare and contrast animal and plant cell responses to hypotonic, hypertonic, and isotonic solutions. Compare and contrast passive and active transport. Explain how membrane potentials are generated and maintained. Interior of a cell is a complex network of dynamically interacting molecules. A cell must balance its inputs and outputs of energy and waste: plasma membrane serves as the cells principal structure to. Diffusion results in the movement of substances down their achieve this balance concentration gradient: dissolved molecules and ions have thermal energy and therefore are in constant random motion, giving them kinetic energy. This kinetic energy is all the energy required for molecules and ions to spread out from a region of higher concentration to a region of lower concentration. The motion of each individual molecule or ion is: passive transport. Substances exhibit a net movement across the plasma membrane due to diffusion.