Question

I worked on this my self but I am not sure about it and I feel like I get confuse in explaining some of them, I want to capare and contrast the different types of membrane transport processes.( including differences and similarities)

simple diffusion

facilitated difusion

osmosis

primaryactive transport

secendary active transport

vesicular transport

The comparison and similarities should be about each of these topics.

1.direction of transport

2.energy requirement

3.protein requirement

4.types of protein if applicable

5. example of substances transported

Answer 1

	Simple diffusion	Osmosis	Facilitated Diffusion	Primary Active transport	Secondary Active transport	Vesicular transport
Definition	The solute molecules passively diffuse across the membrane by dissolving in the Phospholipid bilayer.	The water molecules move passively across the semi-permeable membrane.	The passive diffusion of molecules across the membrane via transport proteins.	The transport of molecules across the membrane is directly coupled with the energy generating reaction such as ATP hydrolysis, transport of electrons, or absorption of light.	The transport of one molecule in a direction is coupled with the transport of other molecule in the opposite direction. (Co-transport)	The transport of macromolecules within a small membrane -bound packet (vesicle).
Direction	Down the concentration gradient i.e. from higher solute concentration to lower solute concentration.	Down the concentration gradient i.e. from higher water concentration to lower water concentration.	Down the concentration gradient i.e. from higher solute concentration to lower solute concentration.	Against the concentration gradient i.e. from the lower solute concentration to higher solute concentration.	Against the concentration gradient i.e. from the lower solute concentration to higher solute concentration.	It moves the cargo within and outside the cells.
Energy requirement	It does not utilize energy for the movement of molecules.	It does not utilize energy for the movement of molecules.	It does not utilize energy for the movement of molecules.	It is active transport utilizes energy for the transport. The uphill movement of the molecule is coupled with an energy-releasing reaction (such as ATP hydrolysis, transport of electrons or absorption of light.) which provides energy for the transport of the molecule.	It also utilizes energy for the transport. In this the uphill movement of molecule is coupled with downhill (energy generating) movement of another molecule in the opposite direction.	It is active transport. It utilizes energy.
Protein Involved	It does not require transport protein.	It can occur without transport proteins but in certain cells, special channel proteins are present for the movement of water.	It utilizes both carrier and channel proteins for the transport of the molecules.	It utilizes carrier proteins (pumps) only.	It utilizes carrier proteins (pumps) only.	It does not utilize carrier or channel proteins. in this the a part of cell membrane extends and engulf the cargo forming a membrane-bound vesicle which moves the cargo to the target location.
Example	Movement of small organic molecules such as O2,CO2,NO,and H2O.	Movement of water across cell membrane. Aquaporins are small integral channel protein channel in erythrocytes which allow movement of water molecules.	Movement of organic molecules like glucose.The glucose transporter(GLUT) is a integral carrier protein. In this,the molecule binds on one side of the transporter protein initiating a conformational change in the protein allowing the solute to pass through on the other side.	Movement of  Na+ and K+ ions via  Na+/K+-ATPase carrier protein also known as the sodium-potassium pump. In this breakdown of each ATP molecule, pumps 3 Na+ ions outside the cell and 2 K+ ions inside the cell.	Movement of  Na+ and glucose via Na+/glucose Cotransporter. It allows the 2 Na+ ions and 1 glucose molecule to enter the cells simultaneously.	Phagocytosis and pinocytosis,