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B
Microtomy
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C
Differential centrifugation
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D
X-ray differaction
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Solution
The correct option is C Differential centrifugation Cell organelles can be separated by the method of differential centrifugation. Differential centrifugation is a common procedure in microbiology and cytology used to separate certain organelles from whole cells for further analysis of specific parts of cells. In the process, a tissue sample is first homogenized to break the cell membranes and mix up the cell contents. The homogenate is then subjected to repeated centrifugations, each time removing the pellet and increasing the centrifugal force. Finally, purification may be done through equilibrium sedimentation, and the desired layer is extracted for further analysis.
So, the correct answer is 'Differential centrifugation'