Which of the functions listed below is/are attributed to various plasma proteins? 1. contribute to blood clotting 2. exert colloid osmotic pressure (to assist the maintenance of water balance) 3. attack viruses and bacteria 4. function as transport proteins for several steroid hormones 5. transport fat-soluble vitamins 6. transport oxygen

The correct answers are options 1, 2, 3, 4 and 5.

Explanation:

Plasma proteins are the proteins found in blood plasma and exhibit distinct functions, like the conduction of various biochemicals in the circulatory system, maintaining the balance of fluid and levels of electrolyte in the body, regulating osmotic pressure, and others.  

Some of the more general plasma proteins found in the plasma of the blood are serum albumin, which helps in maintaining the osmotic pressure and transporting biomolecules around the body. Fibrinogen that helps in the formation of blood clots, and globulins that provides antibodies to fight against bacteria and viruses.  

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