Roles and Responsibilities of a Sales Manager. A sales manager plays a key role in the success and failure of an organization. He is the one who plays a pivotal role in achieving the sales targets and eventually generates revenue for the organization. A sales manager must be very clear about his role in the organization.
The cytoskeleton of a cell is made up of microtubules, actin filaments, and intermediate filaments. These structures give the cell its shape and help organize the cell's parts. In addition, they provide a basis for movement and cell division.ll cytoskeletons consist of three major classes of elements that differ in size and in protein composition. Microtubules are the largest type of filament, with a diameter of about 25 nanometers (nm), and they are composed of a protein called tubulin.
If the R groups are brought close together during protein formation (in the hair follicle), these strong disulfide bonds form causing a curve in the normally linear protein chain that makes up keratin. The more disulfide bonds between R groups, the curlier the hair.