Nick Carter, 34, officially tied the knot with his fiancÃ©e Lauren Kitt on Saturday. The pair's ceremony commenced in Santa Barbara, California, but one key attendee was unfortunately missing from the reception in the form of Nick's younger brother Aaron Carter, 26.
Metabolic enzymes are the most active for human cells. The reason for this is because they regulate each biochemical reaction. Metabolic enzymes are the most active for human cells. The reason for this is because they regulate each biochemical reaction.
The two carrier proteins on the left are using ATP to move sodium out of the cell against the concentration gradient. The proteins on the right are using secondary active transport to move potassium into the cell. Active transport is the movement of a substance across a membrane against its concentration gradient. This is usually to accumulate high concentrations of molecules that a cell needs, such as glucose or amino acids.