PHY2011 Lecture Notes - Lecture 3: Thermodynamic Potential, Electrochemical Gradient, Passive Transport

• School: Monash University
• Department: Physiology
• Course: PHY2011
• Professor: Ramesh Rajan

Document Summary

Lecture 3: movement of substances across the cell membrane ii . Active transport processes: movement of substances across the cell membrane can be of two forms. Active processes (i. e. , do not depend on cell expending energy but uses physical energy. Inherent in the system / processes) (i. e. , requires cell to expend energy . 1o active transport creates concentration gradient to drive 2o active transport. Fluid pressure or concentration gradient is concentration gradient is responsible for molecule responsible for molecule going through cell membrane going through cell membrane. Requires a membrane protein to move molecule through cell to move molecule through cell membrane membrane. In this lecture we will consider the active processes. Secondary active transport that depends on the electrochemical gradients created between one side of the cell membrane and the other side for a substance that has been transported by primary active.