SMT VEERAMMA GANGASIRI COLLEGE OF WOMEN GULBARGA
SEMINAR REPRESTATION
TOPIC = STRUCTURE AND FUNCTION OF MITOCHONDRIA
SUBMITTED BY
AISHWARYA R NANDGI
BSC V SEM (CBZ)
REG. NO – S1916010
SUBMITTED ON-26/12/2021
INTRODUCTION
Mitochondria is a double-membrane-bound organelle found in cytoplasm of eukaryotic cell
Mitochondria” derives from two Greek words: “mitos” meaning thread, and “chondros” meaning granule
Discover by : ALBERT VON KOLLIKER in 1880 in voluntary muscles of insects.
The organelles were then renamed “mitochondria” by CARL BENDA twelve years later.
Albert Von Kölliker
Carl Benda
*The outer mitochondrial membrane
*The intermembrane space
(the space between the outer and inner membranes)
*The inner mitochondrial membrane
*The cristae space
*Matrix
Structure of Mitochondria
Mitochondria
.
Outer membrane
The outer mitochondrial membrane, encloses the entire organelle
60 to 75 angstroms (Å) thick
It contains large numbers of porins also knows as proteins.
Which is act as pore to the membrane
Intermembrane space
The mitochondrial intermembrane space is the space between the outer membrane and the inner membrane.
It is also known as perimitochondrial space.
Because the outer membrane is freely permeable to small molecules, the concentrations of small molecules, such as ions and sugars
STRUCTURE AND FUNCTION OF MITOCHONDRIA
Inner membrane
the inner membrane is rich in an unusual phospholipid
ATP synthase, which generates ATP in the matrix
the area of the inner membrane is five times large as the outer membrane
Cristae
The inner mitochondrial membrane is compartmentalized into numerous folds called cristae,
These folds are studded with small round bodies known as F1 particles or oxysomes
Matrix
The matrix is the space enclosed by the inner membrane
The matrix contains a highly concentrated mixture of hundreds of enzymes,DNA and ribosomes
Thermogenesis: Synthesis of heat
ATP Synthesis
Protein synthesis
Synthesis of steroid hormones
Urea Synthesis (urea cycle)
Cellular respiration
Store and Releases of Ca2+
FUNCTIONS
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