Active Membrane Transport

Active membrane transport is the movement of molecules across a cell membrane from a region of their lower concentration to a region of their higher concentration—in the direction against some gradient or other obstructing factor (often a concentration gradient).

• The movement of particles against the concentration gradient
• Movement is from low to high concentration
• Endocytosis: Uses energy to transport molecules into the cell
• Exocytosis: Uses energy to transport molecules out of the cell

What I learned in this subject was that there is scientific reason why something must be moved with force. I surprised me however, that there was a scientific explanation, because to be completely honest with you, it seemed like to move something against a gradient was just a matter of pushing and pulling, but apparently it is something completely different. I did not already know about this subject until I learned about it in Biology Class. I thought it was very interesting though, how some things can easily move along, while others will have to be moved by force because they are against the gradient. This can be applied outside of biology in Cytology and the study of the human body.