71. The small particles on the outer membrane of mitochondria are stalkless and are called
72. Leptotene chromosomes may be irregularly arranged or may be polarized towards the centrioles forming
73. The cellular and molecular control of programmed cell death is known as
74. Woodcock (1973) showed that chromatin appears to have a 'string of beads' structure and is made up of a number of repeating units which are called
75. Cells, in living organisms, adhere to each other by means of junctions called
76. Which one of the following is known as the 'immovable property' in the cell?
77. In Protoplasm, fat store in the form of
78. The nucleoli and nuclear envelope disappear in which phase of mitosis?
79. Consider the following statements regarding mitochondria and choose the correct answer:
1. Mitochondria are present in all cells which respire aerobically
2. They are absent in bacteria, where the plasma membrane has respiratory enzymes
3. Cells with high metabolic activity have a high number of mitochondria
1. Mitochondria are present in all cells which respire aerobically
2. They are absent in bacteria, where the plasma membrane has respiratory enzymes
3. Cells with high metabolic activity have a high number of mitochondria
80. The fluid mosaic model explains
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