Mitochondria; Structure and function Mitochondria; Cells & Tissues; 9th Biology with Ma’am Shazia
THE PURPOSE OF THIS CHANNEL IS TO FACILITATE THE STUDENTS OF SSC AND HSSC FOR BIOLOGY SYLLABUS(FBISE)
9TH BIOLOGY (SSC-I)
Cells And Tissues (Chapter no 04)
Cell Structure And Function
Organelles are small structures within cell that perform dedicated (specific) functions
Many organelles are present in eukaryotic cells.
A mitochondrion is typically about 0.5um in diameter, the size of some bacteria.
It is from this appearance that the name ‘mitochondrion’ is derived
Greek “mitos” meaning “thread”
“chondrion” meaning “a grain”.
Double membrane bound organelle
Found only in eukaryotes
The outer membrane of mitochondria is smooth
Inner membrane forms infoldings called cristae
Cristae increase the surface area of inner membrane
Mitochondria have their DNA and ribosomes
The ribosomes of mitochondria are more similar to bacterial ribosomes
Sites of cellular respiration (Aerobic respiration)
And are major energy production centers (ATP production site)
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