Ap Bio Unit 4 Progress Check Frq Already Passed

Part 2 C: Neurons (nerve cells) of the central nervous system (brain and spinal cord) and in G0 of the cell cycle and generally do not divide in response to an inquiry. The scientists predict that they can use the data from this experiment to help them treat individuals who suffer from spinal cord injuries. Provide reasoning to support the scientists' prediction. {Ans: Based on the graph, when you block some of the inhibitors you get a lot more cell replication. In other words, blocking the inhibitors allows cells to leave the g0 stage and go back into the cell cycle.}Part 2 A: Based on the data for the groups of cells cultured with 0.1% serum (groups 3-7), identify which of the four proteins tested do(does) not appear to play a role in blocking cell cycle entry by fibroblasts. {Ans: DNA replication is still inhibited when p16 is not present. This is shown by looking at group 3. The "-" sign shows that p16 is not present and the graph still has a low level of DNA replication in that spot.}Part 2 B: Based on the data for the groups of cells cultured with 0.1% serum (groups 3-7),