User talk:Cellsatwork3

Cells.

Cells are the basic unit of life.Cell, in biology, the basic membrane-bound unit that contains the fundamental molecules of life and of which all living things are composed. A single cell is often a complete organism in itself, such as a bacterium or yeast. Other cells acquire specialized functions as they mature.

Plant cells

Plants are also made up of millions of cells. Plant cells have a nucleus, cell membrane, cytoplasm and mitochondria too, but they also contain the following structures: Cell wall – A hard layer outside the cell membrane, containing cellulose to provide strength to the plant.

Animal cells

animal cells are the basic unit of life in organisms. They are eukaryotic cells, meaning that they have a true nucleus and specialized structures called organelles that carry out different functions.

Red blood cell

Red blood cell, also called erythrocyte, cellular component of blood, millions of which in the circulation of vertebrates give the blood its characteristic color and carry oxygen from the lungs to the tissues. The mature human red blood cell is small, round, and biconcave; it appears dumbbell-shaped in profile.