MICROANATOMY

INTRODUCTION TO MICROSCOPY CELL BIOLOGY

MITOCHONDRIA

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
How many membranes does a Mitochondria have
A
one
B
two
C
three
D
four
Explanation: 

Detailed explanation-1: -Mitochondria are surrounded by a double-membrane system, consisting of inner and outer mitochondrial membranes separated by an intermembrane space (Figure 10.1).

Detailed explanation-2: -The inner membrane allows for the transport of hydrogen ions into the inter-membrane space, while the outer mitochondrial membrane prevents their escape. The two membranes working in conjunction build up a lot of potential energy in the form of the charge possessed by the ions within the inter-membrane space.

Detailed explanation-3: -Mitochondria have a structure distinct from that of other organelles since they contain two membranes: the outer mitochondrial membrane (OMM) and the inner mitochondrial membrane (IMM), which separates the intermembrane space (IMS) from the matrix.

Detailed explanation-4: -The inner membrane, which now contains numerous folds, apparently came from the bacterial membrane, while the outer membrane came from the host cell itself. Just like prokaryotes, mitochondria and chloroplasts have their own DNA that is not trapped inside a nucleus.

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