Organisation of a cell has not been achieved in

Which of the following statements are correct? I. Human RBC is about 7.0 ${\rm{\mu m}}$ in diameter II. Cytoplasm is the main arena of cellular activities III. The shape of the cells may vary with the function they perform IV. Various chemical reactions occur in cytoplasm to keep the cell in the living state Choose the correct option

According to cell doctrine, which of the following statements are correct?I. The bodies of all living beings are made up of cells and their productsII. Cells are the basic units of structure in the body of living organismsIII. Cells are the basic units of function in living organisms that is, the activities of an organisms are the sum total of the activities of its cellsIV. Genetic information is stored and expressed inside the cellsChoose the correct option

Which of the following statements are correct? I. Occurrence of different types of tissues, organs and organ system results in division of labour II. A new cell always develops by the division of a pre-existing cells III. Cells are totipotent IV. Cell is the smallest unit, capable of independent existence and performing the essential functions of life The correct option is