Search also in: Web News Encyclopedia Images. striking 1 adj Something that is striking is very noticeable or unusual. The most striking feature of those statistics is the high proportion of suicides..., He bears a striking resemblance to Lenin. â¦ strikingly adv usu ADV adj In one respect, however, the men really were strikingly similar., ...a strikingly handsome man... 2 adj Someone who is striking is very attractive, in a noticeable way. She was a striking woman with long blonde hair.
cell membrane. the outer boundary of the cytoplasm, a layer that controls what enters and leaves a cell.thin, flexible barrier around a cell, regulates what enters and leaves the cell. cell wall. a protective outer covering that lies just outside the cell membrane of plant cells.
The cell membrane regulates what enters and exits the cell. Let's look at the cell membrane and see how itsâ structure allows it to perform this important task. When you think about a membrane, imagine it is like a big plastic bag with some tiny holes. That bag holds all of the cell pieces and fluids inside the cell and keeps any nasty things outside the cell.