Cell is the basic unit of life discuss in brief

A single cell is capable of performing all the functions and life process. It can perform all the metabolic activities required to sustain life. The organ and tissues in multicellular organisms is made up of cells.The cell is the smallest unit that can survive independently and perform all the vital functions of life. Hence, cells are called basic unit of life Centromere is a primary constriction present in the chromosome. It provides orientation to chromosome and marks the space for attachment of chromosomal fibres during cell division. The centromere hasdiscshaped structures called kinetochores on the sides of it. Depending upon the location of centromere in a chromosome, the chromosome is classified into the following four types : (a)Telocentric: Centromere is present at the terminals. (b)Acrocentric: Centromere is present near the terminals resulting in two short arms and two long arms. (c) Sub- metacentric : Centromere divides the chromosomes into two unequal arms. It lies either below centre or above centre. (d)Metacentric : Centromere divides the chromosomes into two equal arms with the centromere in the middle. Unlike unicellular cells which have only one cells that perform all the functions, multicellular organisms have many cells. In multicellular organisms the cells perform specific functions. All the cell performing similar function are organized into group to form tissues. This is called division of labour as different functions are performed by different grou...

Cells as Building Blocks A cell is the smallest unit of a living thing. A living thing, whether made of one cell (like bacteria) or many cells (like a human), is called an organism. Thus, cells are the basic building blocks of all organisms. Several cells of one kind that interconnect with each other and perform a shared function form tissues; several tissues combine to form an organ (your stomach, heart, or brain); and several organs make up an organ system (such as the digestive system, circulatory system, or nervous system). Several systems that function together form an organism (like a human being). There are many types of cells all grouped into one of two broad categories: prokaryotic and eukaryotic. For example, both animal and plant cells are classified as eukaryotic cells, whereas bacterial cells are classified as prokaryotic. Types of Specialized Cells Your body has many kinds of cells, each specialized for a specific purpose. Just as a home is made from a variety of building materials, the human body is constructed from many cell types. For example, epithelial cells protect the surface of the body and cover the organs and body cavities within. Bone cells help to support and protect the body. Cells of the immune system fight invading bacteria. Additionally, blood and blood cells carry nutrients and oxygen throughout the body while removing carbon dioxide. Each of these cell types plays a vital role during the growth, development, and day-to-day maintenance of the...

Cells are the basic units of life capable of doing all the required biochemical processes that a normal cell has to do in order to live. The basic needs for the survival of all living organisms are the same. All living organisms need to respire, digest food for obtaining energy, and get rid of metabolic wastes. Cells are capable of performing all the metabolic functions of the body. Hence, cells are called the functional units of life.