23. cells that need to make a lot of protein are expected to have a large number of 24. a cell’s relatively constant internal physical and chemical conditions are called 25. the electrons that chlorophyll loses to the electron transport chain are replenished by molecules. 26. a cell that has 5 chromosomes in the g1 phase will have chromatids in the g2 phase. 27. adult skin cells can no longer become other types of cells because they have already under