Question

What are three functions of all cells

Answer 1

Answer:

3 Major Functions of a Cell

Energy Generation. Living cells exist in a perpetually active biological state. ...

Molecular Transport. Each cell is surrounded by a membrane that delineates its boundaries and acts as a gatekeeper, controlling the movement of molecules into and out of the cell. ...

Answer 2

Three major functions of cell are Energy generation, Molecular transport and reproduction.

Explanation:

• Cells are the basic structural and functional unit of life. In a complex system like human body, There are hundreds of different cell types which are organized into organs and tissues.

• Every cell type has to perform specific function and all the cells work together in order to allow proper functioning of body.

1. Energy Generation

• All cells require energy to conduct activities for surviving.

• This is why energy generation is a vital and most fundamental function of a cell.

• Mitochondria which is also called the power house of cell is responsible of producing energy in cell.

2. Molecular transport

• Each cell is protected and surrounded by a cell membrane. This membrane is responsible for necessary and selective molecular transportation which helps to keep the cell healthy.
• Small molecules like water, carbon dioxide and oxygen cross the cell membrane without expending energy.

• However, transport of many important molecules depends on energy-utilizing cell membrane pumps.

3. Reproduction

• Every cell has a life span. So reproduction becomes and essential function for cells.

• Cellular reproduction in human body enables the body to replace dying or damaged cells.

• Mitosis is the process of cell reproduction in human body. Here, cell produces an exact copy of its genetic material before splitting into two genetically identical cells.

• Mieosis is a special cellular reproductive process used by eggs and sperms in organisms that employ sexual reproduction.