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BIOLOGY - X LAST MINUTE REVISION NAME / DEFINE / EXPLAIN THE FOLLOWING RELATED TERMS, FILL IN THE BLANKS, IMPORTANT DIAGRAM AND RELATED QUESTIONS, MISCELLANEOUS QUESTIONS ANSWERS. 1. Structure which initiates and regulates cell division in animal cell. Centrosome 2. Cell organelles concerned with protein synthesis. Ribosomes 3. Cell organelle which gives turgidity to plant cells by pressing against the cell wall. Vacuoles 4. Small particles, crystals or droplets which acts as storage of food for cell, starch in plant cell and glycogen in animal cells. Granules 5. Type of cell division in somatic cells. Mitosis 6. Types of cell division for reproductive sex cells/ gametes. Meiosis 7. Mitotic phase in which chromosomes arrange at equatorial plane. Metaphase 8. Mitotic phase in which centrioles start moving towards opposite poles. Prophase 9. Mitotic phase in which the two sister chromatids of each chromosome separate and are drawn apart towards opposite poles. Anaphase 10. Mitotic phase in which furrow starts in the cell membrane at the middle in an animal cell. Anaphase 11. Mitotic phase in which nuclear membrane and nucleoli reappear. Telophase 12. Mitotic phase in plant cell in which cell plate is laid down in the cytoplasm at the equatorial plane. Telophase 13. Phase of cell cycle in which volume of cytoplasm increases, RNA and Proteins are synthesized. G1 (First Growth Phase) 14. Phase of cell cycle in which more DNA is synthesized and the chromosomes are duplicated. Syntheisis Phase( S-phase) 15. The point of attachment of two sister chromatids. Centromere 16. Structure formed when the DNA strand winds around a group of eight histone molecules. Nucleosome. 17. Structure formed of three components, phosphate, pentose sugar and any one nitrogenous base pairs. Nucleotide. 18. Repeated sequences of nucleotide that encode a particular protein.Genes 1
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