Structure And Dynamics Of Transport

Question 1

Describe passive and active transport?

Answer 1

Passive transport or facilitated diffusion, movement of ions down their chemical and/or electrical transport.

Question 2

Describe the differences between transporters and Channels?

Answer 2

Transporters- also called carriers, permeases or pumps.
Have specific binding sites for substrates-alternative access.
Can transport up or down electrochemical gradient.

Question 3

Describe the concentration gradients in the cell?

Answer 3

High calcium concentration in ER/SR. Low inside cell.

High potassium inside, High Na outside the cell.