Why cell is called the structural and functional unit of life ? Why is the plasma
membrane called SPM ?
Answers
Explanation:
Cell is called the structural and functional unit of life because all organs are made of the smallest unit cell. All living organisms are made of cell.
Plasma membrane is called selectively preamble membrane because plasma membrane allows entrance of selected molecules and selectively preamble membrane is also allows to enter selected particles.
WHY CELL IS CALLED STRUCTURAL AND FUNCTIONAL UNIT OF LIFE
Mohandas Karamchand Gandhi was born on the 2nd of October 1869 in western India. He is famous because he led India to independence and inspired movements for civil rights and freedom across the world, he is also known because he undertook long fasts as a sign of social protest in favour of women’s rights and also civil rights in South Africa and India, he fought against excessive taxes and discrimination.
He spent twenty-one years in South Africa where he developed his political views, ethics and political leadership skills. There, Indians employed Gandhi as a lawyer and he stood up for Hindu labourers who had very limited rights. He believed he could bridge historic differences, especially regarding religion, and he took that belief back to India where he tried to implement it.
Gandhi was the leader of the Indian independence movement in British-ruled India, his vision of this new independent India was based on a religious pluralism, but there was a religious conflict between Muslims, Hindus and Sikhs. So he undertook several fasts unto death to promote religious harmony.
His last fast, started on the 12th of January 1948, it had the indirect goal of pressing India to pay out some cash assets owed to Pakistan. On the 30th of January 1948 a Hindu nationalist assassinated Mahatma Gandhi by firing three bullets into his chest, he accused Gandhi of favouring Pakistan and opposing the doctrine of nonviolence.
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WHY PLASMA MEMBRANE CALLED SPM
The plasma membrane is called a selectively permeable membrane as it permits the movement of only certain molecules in and out of the cells. Not all molecules are free to diffuse. If plasma membrane ruptures or breaks down then molecules of some substances will freely move in and out of the cells. As the plasma membrane acts as a mechanical barrier, the exchange of material from its surroundings through osmosis or diffusion in a cell won’t take place. Consequently, the cell would die due to the disappearance of the protoplasmic material. It allows hydrophobic molecules and small polar molecules diffuse through the lipid layer, but does not allow ions and large polar molecules cannot diffuse through the membrane.
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