The specific action of an enzyme with a single substrate can be explained using a Lock and Key analogy first postulated in 1894 by Emil Fischer. In this analogy, the lock is the enzyme and the key is the substrate. Only the correctly sized key (substrate) fits into the key hole (active site) of the lock (enzyme).
Smaller keys, larger keys, or incorrectly positioned teeth on keys (incorrectly shaped or sized substrate molecules) do not fit into the lock (enzyme). Only the correctly shaped key opens a particular lock. This is illustrated in graphic on the left.
Hope this helps
Surely if he has blood type O, one parent has to have type O also
The addition of dynactin caused dynein to travel farther along the micro tubule.
<u>Explanation:</u>
Dynein is a family of cytoskeletal motor proteins that move along micro tubules in cells. They convert the chemical energy stored in ATP to mechanical work. Dynein transports various cellular cargo, provides forces and displacements important in mitosis, and drives the beat of eukaryotic cilia and flagella.
Dynactin is a 23 sub unit protein complex that acts as a co-factor for the micro tubule motor cytoplasmic dynein-1. It is built around a short filament of actin related protein-1.
<span>Cytoskeleton which is within the cell is extremely small. But later a discovery came out which enables it to be zoomed.
Cell Biologist discovered that organelles they do not float freely in a cell, but they are being supported by a structure which is within the cytoplasm. Cytoplasm is termed as a mixture of cytosol and organelles. The substance which is gel-like in the cytosol, all the other organelles, structures which are suspended in the liquid they make up cytoplasm.
The work of cytoplasm is to support its structures and also fill the cell. The cytoskeleton is termed as cellular which is contained within the cytoplasm and it is always present in all cells and gives cells a shape.</span>
