Mitochondrion in Animal Cell

Mitochondrion is a membrane-bound organelle found in eukaryotic cells. It is known as the powerhouse of the cell because it produces energy in the form of ATP (adenosine triphosphate) through cellular respiration. Mitochondria are present in all animal cells, including humans.

Size of Mitochondrion

The size of mitochondria varies according to the type of cell they are present in. However, in general, mitochondria are the second-largest organelles in animal cells, after the nucleus.

Function of Mitochondrion

Mitochondria play a crucial role in the production of energy in animal cells. They are responsible for generating ATP, which is used by cells for various cellular processes. Mitochondria also play a role in regulating cellular metabolism, calcium signaling, and apoptosis (programmed cell death).

Structure of Mitochondrion

Mitochondria are composed of two membranes - an outer membrane and an inner membrane. The outer membrane is smooth and porous, while the inner membrane is highly folded and forms cristae. The space between the two membranes is called the intermembrane space, and the space inside the inner membrane is called the mitochondrial matrix. The matrix contains enzymes necessary for the production of ATP through cellular respiration.

Conclusion

In summary, mitochondria are essential organelles present in animal cells that produce energy in the form of ATP. They are the second-largest organelles in animal cells and have a complex structure that includes two membranes, cristae, intermembrane space, and a mitochondrial matrix.