A cell is a unit of living that can live by itself and includes all living organisms and tissues of the body. It consists of three major parts: the cell membrane, nucleus, and cytoplasm. In addition to surrounding the cell, the cell membrane is in charge of deciding which substances can get into and leave the cell.

A cell is a mass of cytoplasm that is bound externally by a cell membrane. Usually microscopic in size, cells are the smallest structural units of living matter and compose all living things. Most cells have one or more nuclei and other organelles that carry out a variety of tasks.

Biomolecules are divided into two types- inorganic and organic. Inorganic biomolecules includes minerals, gases and water and organic biomolecules includes carbohydrates, fats, proteins, nucleic acids, vitamins, etc. Different biomolecules can be classified as aldehyde, ketones and aromatic compounds as chemical forms.

Biological classification is defined as the process of grouping organisms ing to certain similarities. Linnaeus proposed the two kingdoms of classification, He classified organisms in the animal kingdom which is called Animalia and in the plant kingdom which is called Plantae.

The cell is the smallest, basic structural, and functional unit of living things; hence it is generally referred to as 'building blocks of life. Cells are capable of independent existence and performing essential functions of life.

The cell (from Latin cella, meaning "small room") is the basic structural, functional, and biological unit of all known living organisms. Cells are the smallest unit of life that can replicate independently, and are often called the "building blocks of life".