Why do cells come together?

Im curious, i mean a suntan will fade as dead skin cells are washed off and replaced as will a scab or permanent marker. So how does a tatoo stay put? And why do they go discouloured ...show more

I was thinking about how cells are basically just a series of chemical reactions, and let's say a cell died of oxygen deprivation. It died because the Oxygen wasn't there to ...show more

Just as all cells come from preexisting cells, all mitochondria—the cell organelles that convert energy in food to a form of energy that can do biological work—come from preexisting mitochondria. Cells do not synthesize mitochondria from...

I have a rather large table header view above my table view. I have a number of subviews in that header view. I am doing something a bit nonstandard where I am "sticking" some of those subviews (but not all) at the top of the table view. My...

I would prefer a scientific answer. I was thinking that life (cells) started over a long period of time, matter just locked into the certain proportions and created a very primitive eukariotic type cell. Also, what are viruses if they are life, but not...

It is said prokaryotic cells were the first cells on earth and the cell theory states that all cells come from pre-existing cells. Then how did eukaryotic cell come from a prokaryotic cell even though they don't have nucleus in them?