Weekly Blog 10/8/16 - The Cell Cycle

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Summary

There are four phases of the cell cycle: G0, G1, G2, and M. M stands for mitosis. There are 6 stages in mitosis: interphase, prophase. metaphase, anaphase, telophase, and cytokinesis. During mitosis, cell division occurs. The cell goes through all 6 stages in order for that to happen. The third statement in the Cell Theory states that all cells come from pre existing cells. Mitosis is how that happens.

SP6: Constructing explanations and designing solutions

I constructed an explanation of how cells come from pre-existing cells when I completed a gizmos and worksheet on the cell cycle. To answer and design solutions to the questions of the papers, I had to experiment and gather information through the gizmos by doing several things. First, I had to adjust the gizmos by following the instructions on the top box. Then, I had to experiment, read, and observe the information, graphics, and text.

XCC: Structure And Function

In an experiment, we proved how water and liquids travel in and out of a cell's membrane. In a cell, things often need to be transported in and out of the membrane (the function). Because of this, the membrane has little holes or pores that allow that function to happen. It's semi-permeable which means it acts like a barrier to most (but not all) molecules. This structure allows the function to happen. Things can be transported through osmosis, diffusion, and more. For example, in osmosis the solvent either moves in or out of the cell to even out the ratio of solvent to solute. To visualize this, we put an deshelled egg in some sort of liquid. After a period of time, you can see if the water was isotonic, hypertonic, or hypotonic, depending on the size of the egg. In order for osmosis to happen, the structure of the cell and membrane has to be semi-permeable and allow water to go through. CO2, O2, and H2O are one of the few types of molecules that can go through the membrane.