Co-transport is a type of transport across cell membrane and it requires transport proteins embedded in the membrane of the cell.

Example: absorption of sodium ions (Na+) and glucose by cells lining the ileum (a part of the small intestine) 1.

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Active transport is an active process meaning it requires the use of ATP, whereas facilitated diffusion is a passive process meaning it does not need ATP.To carry...

The purpose of glucose and sodium being transported across the epithelial cells of the small intestine is in order to move glucose across the cell against its con...

This occurs through a cotransport protein as sucrose moves in with the hydrogen ions. Sucrose diffuses through the plasmodesmata from the companion cell into the sieve tube and this reduces the water potential in the sieve tube elements. Water follows by osmosis and increases the hydrostatic pressure in the sieve tube element.

There are several different ways substances can be transported: 1) simple diffusion, i.e. substances that tend to be lipid soluble/ non-polar and can pass easily ...

The proximal convoluted tubule is used for selective re-absorption of glucose, water, peptides and other nutrients from the tubule fluid back into the blood.

Na+ ions are actively transported out of the epithelial cell into the blood by an Na+ pump. This requires ATP

Simple diffusion, facilitated diffusion and active transport are three methods to transport various molecules across a membrane.