PLASMA MEMBRANE

LIFE WITHIN A SINGLE PLASMA MEMBRANE

LIFE WITHIN A SINGLE PLASMA MEMBRANE Protozoa have unicellular (cytoplasmic) organization. But they are not simple organisms. Often, they are more complex than any particular cell in higher organisms. Some individual protozoans come together to form colonies. The individuals in a colony are not

Movement of membrane across plasma membrane

      greater than it inside. Filtration Hydrostatic       pressure     forces     small molecules            across            selectively permeable membranes from areas of higher    pressure     to   areas    of    lower pressure. A frog’s blood         pressure forces           water          and dissolved wastes into the kidney        tubules      during urine formation. Active

PLASMA MEMBRANE

The plasma membrane surrounds the cell. Chemically plasma membrane is composed of: Protein: 60 to 80% Phospholipids: 20 to 40 % Cholesterol in small amount Carbohydrates in small amount Fig: Fluid mosaic model of plasma membrane STRUCTURE OF CELL MEMBRANE S. onathan Singer and