The principal components of the plasma membrane are lipids (phospholipids and cholesterol), proteins, and carbohydrates. The plasma membrane protects intracellular components from the extracellular environment. The plasma membrane mediates cellular processes by regulating the materials that enter and exit the cell.
Members of the Shudra caste, for example, are relegated to performing hard physical work regardless of their skill, intelligence, or ambition. Those born into the Brahman caste must attend university or become a member of the clergy, even though they may show no interest or aptitude toward that end.
A caste system is a social system based on ascribed statuses, which are traits or characteristics that people possess as a result of their birth. Ascribed statuses can include race, gender, nationality, body type, and age. A caste system ranks people rigidly.No matter what a person does, he or she cannot change castes. caste system is a social system based on ascribed statuses, which are traits or characteristics that people possess as a result of their birth. Ascribed statuses can include race, gender, nationality, body type, and age. A caste system ranks people rigidly. No matter what a person does, he or she cannot change castes.