1. | is a non- membrane bound organelle found in all cells which helps in cell division |
2. | is a non- membrane bound organelle found in plant cells which helps in cell division |
3. | is a non- membrane bound organelle found in animal cells which helps in DNA replication |
4. | is a non- membrane bound organelle found in animal cells which helps in cell division |
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Which of the following is absent in almost all plant cells?
1. | Plastid | 2. | Cell wall |
3. | A large central vacuole | 4. | Centriole |
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Nucleoprotein fibers in the interphase nucleus called chromatin contain all the following except:
1. | DNA | 2. | Basic histones |
3. | RNA | 4. | Acidic histones |
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1. | it usually contains two cylindrical structures called centrioles |
2. | both centrioles in centrosome are parallel to each other |
3. | in centrioles, the peripheral fibril is a triplet |
4. | the central part of the proximal region of the centriole is a proteinaceous hub |
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Spindle fibers are attached to the chromosome in the region of:
1. | Centrosome | 2. | Chromomere |
3. | Chromonema | 4. | Kinetochore |
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