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Unicellular organisms are capable of (i) independent existence and (ii) performing the essential functions of life. Anything less than a complete structure of a cell does not ensure independent living. Hence, cell is the fundamental structural and functional unit of all living organisms.
for various processes within the cell such as, the creation of gradient, movement of molecules across membranes, conversion of chemical energy into mechanical energy
Help in cell wall formation, DNA replication and distribution to daughter cells. Also help in respiration, secretion processes, to increase the surface area of the plasma membrane and enzymatic content.
Cells vary in size and structure as they are specialized to perform different functions. But the basic components of the cell are common to all biological cells. This lesson deals with the structure common to all types of the cells. You will also learn about the kinds of cell division and the processes involved therein in this lesson. OBJECTIVES
Cell The Unit of Life Class 11 Biology Notes Chapter 8 Pdf free download was designed by expert teachers from the latest edition of NCERT books to get good marks in CBSE board exams.
Cells are incredibly variable. Bacterial cell looks simple compared to those within our nervous system. However, the bacterial cell is the entire organism; that senses the environment, obtains food, gets rid of waste, and reproduces. In contrast, a human being is composed of approximately 10 trillion cells.
The cell cycle is divided into two basic phases: Interphase. M Phase (Mitosis phase) The M Phase represents the phase when the actual cell division or mitosis occurs and the interphase represents the phase between two successive M phases.
