Question

describe the

ultrastructure of Mitochondria ​

Answer 1

The mitochondrion (/ˌmʌɪtəˈkɒndrɪən/, /-təʊ-/,[1] plural mitochondria) is a double-membrane-bound organelle found in most eukaryotic organisms. Some cells in some multicellular organisms may, however, lack them (for example, mature mammalian red blood cells). A number of unicellular organisms, such as microsporidia, parabasalids, and diplomonads, have also reduced or transformed their mitochondria into other structures.[2] To date, only one eukaryote, Monocercomonoides, is known to have completely lost its mitochondria.[3] The word mitochondrion comes from the Greek μίτος, mitos, "thread", and χονδρίον, chondrion, "granule"[4] or "grain-like". Mitochondria generate most of the cell's supply of adenosine triphosphate (ATP), used as a source of chemical energy.[5] A mitochondrion is thus termed the powerhouse of the cell.[6]

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Answer 2

★ Definition of Mitochondria :

• ⟼ The mitochondrion is a double membrane-bound organelle found in most eukaryotic organisms.

• ⟼ Some cells in some multicellular organisms lack mitochondria.

★ Ultrastructure of Mitochondria :

• ⟼ Mitochondria are bounded by an envelope consisting of two concentric membranes, the outer and inner membranes.

• ⟼ The space between the two membranes is called inter-membrane space.

• ⟼ A number of invaginations occur in the inner membrane; they are called cristae.

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