Essential Question 3 ch. 9

Protiens regulate the cell cycle by signaling activites in thecelll cycle using cyclin and/or CDKcombinations which include DNA replication, protien sythesis, and nuclear division thought out the cell.

Essential Question 2 ch. 9

Eukaryotic cells reproduce by mitosis and cytokinesis by going through the cell cycle. THey go through interphase which prepares the cell for mytosis. In mitosis the nucleus divides through prophase, metaphase, anaphase, and telophase. After the nucleui are ready to be slipt into separate cells then cytokinesis splits the cell into two separate cells.

Essential Question 1 ch. 9

Cells divide becasue if the cell gets to big then it is harder for cellular communication and to transport substances, and the ratio of surface area to volume. If the cell gets to big it will be harder and less efficent for the cell to get needed nutrients and eventually can die.

essential question 2 ch 8

In photosynthesis you can not have one phase and not the other, you have to have both light and chemical engery. In each phase you make the energy that the other needs and it keeps repeating.

Essential Question # 1 Ch. 8

Organisms utilize engery by making ATP which gives energy to the metabolism, which is where all biological reactions take place in the cell which give the cell and organisms homeostasis.