Cambridge complete biology for cambridge IGCSE 2nd Edition Ebook PDF

0
768

Cambridge complete biology for cambridge IGCSE 2nd Edition Ebook PDF

Cambridge complete biology for cambridge IGCSE 2nd Edition Ebook PDF

Cambridge complete biology for cambridge IGCSE 2nd Edition Ebook PDF Cell membrane is also called the plasma membrane. It can be observed only through an electron microscope.Plasma membrane is the outermost covering of the cell that separates the contents of the cell from its external environment.Water also obeys the law of diffusion. The movement of water molecules through a  selectively permeable membrane is called osmosis.

Cambridge complete biology for cambridge IGCSE 2nd Edition Ebook PDF

 

  • Osmosis is the passage of water from a region of high water concentration through a  semi-permeable membrane to a region of low water concentration. Thus, osmosis is a special case of diffusion through a selectively permeable membrane.
  • Unicellular freshwater organisms and most plant cells tend to gain water through  osmosis. Absorption of water by plant roots is also an example of osmosis.
  • Thus, diffusion is important in exchange of gases and water in the life of a cell. In additions to this, the cell also obtains nutrition from its environment.
  • Different molecules move in and out of the cell through a type of transport requiring  use of energy in the form of ATP.
  • Reverse osmosis (RO) is a water purification technology that uses a semipermeable  membrane to remove larger particles from drinking water.

[toggle title=”Cambridge complete biology for cambridge IGCSE 2nd Edition Ebook PDF” state=”close”]Download[/toggle]

SynopsisThis book meets the needs of all students following the Cambridge International Examinations (CIE) syllabus for IGCSE Biology. Updated for the most recent syllabus and the latest scientific developments, it covers all aspects of the syllabus content in an attractive and engaging format for both native and non-native speakers of English. Fully endorsed by University of Cambridge International Examinations

Cambridge complete biology for cambridge IGCSE 2nd Edition Ebook PDF