LIFE SCIENCE

Detailed explanation-1: -All living organisms are composed of structural and functional units called cells. The body of a living organism may be composed of a single cell or many cells. A cellis the smallest unit of life that can replicate independently.

Detailed explanation-2: -All known living things are made up of one or more cells. All living cells arise from pre-existing cells by division. The cell is the fundamental unit of structure and function in all living organisms. The activity of an organism depends on the total activity of independent cells.

Detailed explanation-3: -Yes, all living things are made up of cells. In 1665, Robert Hooke discovered the existence of cells using a microscope, which further paved the way for the discovery of various other microscopic organisms.

Detailed explanation-4: -All cells are made from the same major classes of organic molecules: nucleic acids, proteins, carbohydrates, and lipids.