Question

Which of these substances is transported by blood plasma?
A. Potassium
B. Food
C. Alcohol
D. All of the above

Answer 1

Hint:
Blood is the special fluid used by complex organisms such as human beings for the transportation of substances within the body. It is a connective tissue that consists of matrix, plasma and formed elements. Lymph is another special fluid that helps in the transportation of different substances. A colourless fluid containing lymphocytes which are responsible for immune response of the body is called lymph.

Complete answer:
Nearly 55 percent of the blood is composed of plasma which is a straw-coloured viscous fluid. Plasma consists of around 6-8% of proteins and 90-92% of water. Fibrinogen, globulins and albumins are the proteins in the plasma required for coagulation of blood, defense and maintaining osmotic balance respectively. It contains minerals like Na, Mg, bicarbonates and Cl. Blood plasma helps in the transportation of glucose, amino acids and lipids. They also contain clotting factors in an inactive form. Plasma helps in maintaining temperature of the body and also blood pressure. Blood plasma also helps in circulating red blood cells, white blood cells, hormones, blood platelets and digested food. Blood plasma also helps in carrying excretory products to the excretory organs from where they are thrown out of the body.
Thus, the correct answer is:- Food.

Option ‘B’ is correct

Note:
Water plays a major role in the transportation of substances as it constitutes nearly 90-92% of the body liquid. The body water is easily exchangeable with the other parts of the body that makes the transportation easier and also maintains the hydration of the body tissues.