The cellular membrane, in the case of cells that don't have a rigid cellular wall, outlines the cell and contains the cytoplasm but it's the cytoskeleton that is more responsible for the shape of a cell, which come in a variety of shapes: squamous, cuboide, colunar, neurons, etc. In cells that do have a rigid cellular wall, such as plant cells, it's the cellular wall that gives it <span>its shape.</span>
0. there is no x so the line doesnt increase or decrease
No they aren't scavengers they are parasites.
The overstreching term would be an earthquake but I belive that would actually be a "Normal Fault."