What is the difference between facilitated transport and active transport?
Facilitated transport refers to the assisting of a molecule to cross a membrane along it's gradient while active transport refers to the assisting of a molecule to cross a membrane against it's gradient
What does it mean when something "moves against it's gradient"?
To move against the gradient is to move from low concentration to high concentration
What is a protein called that exists on the outer parts of the phospholipid bilayer plasma mebrane?
An extrinsic protein or a peripheral protein
What is the most popular protein receptor in the plasma membrane that uses Active Transport?
Sodium Potassium ATPase pump
Is a cells plasma membrane permeable or semipermeable?
Semipermeable
What is a phospholipid bi-layer?
A phospholipid bi-layer refers to a phosphate anion head which is polar/hydrophilic and 2 lipid tails which are non-polar/hydrophobic
What kind of particles cannot pass through a cells plasma membrane?
Highly charged or very big particles (unless they are aided by something that spans the membrane such as a receptor protein)
What is a protein called that spans across the entire phospholipid bilayer plasma membrane?
An intrinsic protein or an integral protein
Does Active Transport require energy and why or why not?
Yes, Active Transport requires energy (ATP) because it opposes the natural flow of particles along their gradient
Name the two ways things can enter or exit a cell other than through carrier mediated transport systems
