· The basic structural and fanctional unit of the human body is a) protein c) ti

Question

· The basic structural and fanctional unit of the human body is a) protein c) tissue e) the orgah system b) the cel d) the orgarn 37. The watery medium that surrounds a cell is known as a) cytosol c) extracellular fluid e) a colloidal gel b) protoplasm d) cytoplasm 38. Which of the following terms is not used to define the structure that separates the costents of a b) a cell membrane human cell from its surrounding medium? a) a cell wall c) plasma membrane e) all of the above are used 39e Functions of the cell membrane include a) separation of the cytoplasm from the extracellular fluid b) regulation of exchange of materials with the environment c) sensitivity to changes in the extraceliular fluid d) structural support e) all of the above

Explanation / Answer

36) The cell. It is the building block of our body. Just think of the number of bricks which forms a building. Similarly, many cells form a body. It controls all the structural and function aspects.

37) Extracellular fluid.

You can easily guess the answer from the etymology. Extracellular fluid which means the fluid which surrounds a cell. It helps in the interaction of cell with the outside environment.

38) The cell wall is presenet as a protective covering outside the plant cells. It is not present in animal cells. So human cell has no cell wall.

39) All of the above. Cell membrane functions in a huge spectrum for eg, from exchange of nutrients to protection everything is done by cell membrane which surrounds the cell.

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