Active transport – spiral notes Molecules move from _________ ____________to _________ ____________ with help and MUST use Energy in the form of _____(adenosine triphosphate). Since molecules naturally go from where there is more to where there is less, forcing them to do the opposite requires energy __________ __________– Proteins imbedded in the membrane that uses energy (ATP) to transport molecules against their concentration gradient Example: Na+/K+ Pump (Sodium-Potassium Pump) __________ ____________- Bulk Transport using ____________. ___________ – Cell takes in molecules by making a membrane bubble around it I) _____________ – cell eating II) _____________ – cell drinking ____________ – Cell gets rid of molecules by fusing a membrane bubble to the cell membrane

Active transport – Spiral questions 1. The sodium-potassium pump is considered to be __________________________, because the molecules flow from __________________ to _______________________. 2. The picture below depicts a white blood cell eating a pathogen. What process in your body does this and is it passive or active transport? 3. The diagram below represents movement of a large molecule across a membrane using ATP. Which process is best represented in this diagram? 4. _________________ is the process that allows large food particles to enter the cell, whereas ____________________ is the process that allows liquids to enter the cell.