1.binterphase is divided into what three stages? what happens in each? 2. where are centrosomes/centrioles located during interphase? 3. how much of the cell cycle is spent in interphase?

1.Gap 1 is DNA repair, S-phase is where cells DNA replicates, Gap 2 is where separation of the of S-phase and M-phase is where mitosis starts.

2. Centrosomes is located near the nucleus envelope  in preparation of another phase.

3. It depend on type of cells and organism but usually takes 20hrs which is 90% of total time spent in cell division.

i am going to guess that it is co2.