NEET BIOLOGY

Detailed explanation-1: -Evolution of cells refers to the evolutionary origin and subsequent evolutionary development of cells. Cells first emerged at least 3.8 billion years ago approximately 750 million years after Earth was formed.

Detailed explanation-2: -New cells are created from existing cells through a process referred to as the cell cycle. One cell can make a copy of itself and form two new daughter cells.

Detailed explanation-3: -All cells experience changes with aging. They become larger and are less able to divide and multiply. Among other changes, there is an increase in pigments and fatty substances inside the cell (lipids). Many cells lose their ability to function, or they begin to function abnormally.

Detailed explanation-4: -Over time, as other organic compounds such as DNA and proteins developed, cells also evolved into more complex structures. Once a cell was able to be stable, reproduce itself, and pass its genetic information to the next generation, then there was life.