006 Donnan Equilibrium and Driving Force

The video tutorial explains the Donnan equilibrium, membrane potential, and the driving force affecting ion movement. It begins with an introduction to the Donnan equilibrium, followed by a detailed explanation of membrane potential and its significance. The tutorial then delves into the Donnan equilibrium, using sodium ions as an example to illustrate how ions move in and out of cells. The concept of driving force is introduced, explaining how it influences sodium ion movement and membrane potential. The video concludes with a review of the key concepts discussed.

What is the main topic of the video?

• Donnan equilibrium and driving force

• Genetic mutations

• The history of cell biology

• Photosynthesis process

What does the symbol E sub M represent?

• Molecular weight

• Magnetic field

• Membrane potential

• Equilibrium potential

Why does sodium move into the cell?

• Due to the cell's shape

• Due to its size

• Because of the charge inside the cell

• Because of the temperature

What happens when the membrane potential is far from the equilibrium potential for sodium?

• Sodium ions dissolve

• Sodium ions become uncomfortable

• Sodium ions stop moving

• Sodium ions become stable

What effect does sodium rushing into the cell have on the membrane potential?

• It makes the membrane potential more negative

• It makes the membrane potential more positive

• It has no effect

• It neutralizes the membrane potential