<em>1.) </em>Based on the beliefs of some humans, cloning is not ethical. They fear that cloning can cause mental or physical damage to the organism that is cloned, they also believe it to be unethical because animals that are cloned are usually placed in poor living conditions before, during, or after the experimentation.
<em>2.) </em>Again, there is of course a difference scientifically, but ethically, no. The genetic structure of monkeys and humans are quite similar so cloning monkeys lead to advancements in cloning humans but they are still two totally different organisms... When ethics come into play, people would be more quick to say, "If you won't clone humans, then you shouldn't clone a monkey." Or something along those lines.
Just as when we grow and need more food and energy so does a cell. when a cell is growing there is more of it that can be utilized putting more stress on the DNA to code whatever it needs. The bigger the cell is the denser and thicker the cell membrane gets making it harder for materials to work its way in and out of the cell.
The cell cycle has two major phases: interphase and the mitotic phase. During interphase, the cell grows and DNA is replicated. Usually the cell will divide after mitosis in a process called cytokinetic in which the cytoplasm is divided and two daughter cells are formed.
