Question

1. use the word bank to complete the paragraph below: completed regulators three cyclins apoptosis checkpoints cell cycle __________ determine the timing and order of cell cycle events and ensure that each phase is properly ________ before the cell moves to the next. regulatory proteins called ________ control the progression of a cell through different phases of the cell cycle. cell cycle regulators can initiate ________ (programmed cell death), especially when the cell cycle encounters damage that cannot be repaired. cell cycle ________ are control mechanisms that ensure the cell division process is accurate and that each phase has been completed correctly. there are __________ main checkpoints in the cell cycle, the g1/s checkpoint, the g2/m checkpoint, and the m/g1 checkpoint. 10. describe what each checkpoint does. g1 g2 m

Explanation:

Cell cycle regulators govern the cell cycle's timing and order, ensuring proper phase - completion. Cyclins are regulatory proteins. Apoptosis is programmed cell death initiated by regulators when damage is irreparable. Checkpoints are control mechanisms, and there are three main ones. The G1 checkpoint checks for cell size, nutrients, growth factors and DNA damage before DNA replication in S - phase. The G2 checkpoint ensures DNA replication is complete and checks for DNA damage before mitosis. The M checkpoint checks that chromosomes are properly attached to the spindle fibers before anaphase in mitosis.

Answer:

1. regulators; completed; cyclins; apoptosis; checkpoints; three

10.
G1: Checks cell size, nutrients, growth factors and DNA damage before S - phase.
G2: Ensures DNA replication is complete and checks for DNA damage before mitosis.
M: Checks that chromosomes are properly attached to spindle fibers before anaphase in mitosis.