In Spain, he has won one La Liga title, two Copas del Rey, two Champions League titles, and two Club World Cups. Ronaldo holds the record for most goals scored in a single UEFA Champions League season, having scored 17 goals in the 2013â14 season.
Plasma Membrane. All living cells, prokaryotic and eukaryotic, have a plasma membrane that encloses their contents and serves as a semi-porous barrier to the outside environment. The membrane acts as a boundary, holding the cell constituents together and keeping other substances from entering.lasma Membrane. All living cells, prokaryotic and eukaryotic, have a plasma membrane that encloses their contents and serves as a semi-porous barrier to the outside environment. The membrane acts as a boundary, holding the cell constituents together and keeping other substances from entering.
It also houses DNA (deoxyribonucleic. acid), the cellâs hereditary material. The nucleus is surrounded by a. membrane called the nuclear envelope, which protects the DNA and. separates the nucleus from the rest of the cell. Plasma membrane (image on page 7) The plasma membrane is the outer lining of the cell.