What are the properties of plasma proteins?

Answer 1

Cells are the smallest structures capable of basic life processes and are essential parts of all living things. They take in nutrients, expel wastes, and reproduce into new cells while continually performing countless biochemical reactions.

Answer 2

Inorganic substances: water, which makes up 90% of the protoplasm, mineral salts, such as NaCl-salt, and gases like oxygen and carbon dioxide

Organic substances: proteins, carbohydrates, lipids, nucleic acids and enzymes

Answer 3

(1) Plasma proteins are large molecules with molecular weights ranging mostly from 50,000 to 300,000 Daltons.

(2) With the notable exception of albumin, nearly all plasma proteins are Glycoproteins, containing oligosaccharides. The oligosaccharide chains are responsible for certain properties of plasma proteins like solubility, viscosity, charge, denaturation etc.

(3) like most other proteins, their charged residues tend to be located on the surface.

(4) Many plasma proteins exhibit polymorphism. Polymorphism is a Mendelian trait that exists in the population in at least two phenotypes, neither of which is rare. Plasma proteins showing polymorphism are haptoglobin, transferring, ceruloplasmin, and immunoglobulin. Due to the large size of the protein molecules,

(5) they can be separated from the plasma by ultracentrifugation (unlike electrolytes or other smaller molecules).

(6) They are unable to pass across the capillary membrane and consequently exert an oncotic pressure of about 25 mm Hg.

(7) Owing to their size and particularly their shape, they greatly contribute to blood viscosity. The plasma protein fibrinogen is a significant contributor to blood viscosity. Due to the presence of polar residues on their surfaces,

(8) the protein molecules are soluble in water.

(9) The molecules show electrophoretic mobility.

(10) The molecules are amphoteric. This is because the polar residues comprise both NH2 and COOH groups.

Answer 4

Protoplasm is the living material that is found in cell.It grainy substance that was found in plant cells. Protoplasm which makes up the fluid portion of the cell consists of the cell cytoplasm and its nucleus .It is mainly composed of nucleic acids,proteins,lipids,inorganic salts,water and carbohydrates.

Answer 5

A plasma is an ionized gas. Thus it has all the properties of a gas PLUS the fact that it is electrically charged (and/or can carry a charge).

Answer 6

The protoplasm refers to the living content of a cell enclosed by a plasma membrane. It is composed of the nucleus, ribosomes, mitochondria and cytoplasm.