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