The UK's most valuable monument is deemed to be the 1,000-year-old Tower of London, which is worth an estimated Â£56billion to the British economy and came it at number five in the list of European list. Its value is six times more than its nearest rival the Colosseum in Rome, which is valued at Â£72billion.
Cell cycle checkpoints are control mechanisms in eukaryotic cells which ensure proper division of the cell.
Best Answer: There are 3 checkpoints during the cell cycle. The checkpoints involve regulating chemicals (protein kinases and cylins) and other factors which allow the cell cycle to continue or be suspended at a certain stage. If everything is ok, the cycle continues. If not, the cycle stops. When the cell loses control of the cell cycle (the checkpoints have failed), the answerer above me is absolutely correct - cancer occurs. The cell telephone cycle is G1 S G2 and mitosis. It dived the cell telephone into 2 sister cells to replace the died cells.