In most cells, respiration takes place in tiny organelles called mitochondria, which are found in the cytoplasm. These organelles are sometimes called "cellular power plants." The fundamental ...

When cells express specific genes that characterise a certain type of cell we say that a cell has become differentiated. Structure and replication of DNA DNA is the molecule that holds the ...

Cellular nutrients come in many forms, including sugars and fats. In order to provide a cell with energy, these molecules have to pass across the cell membrane, which functions as a barrier ...