Wednesday, October 12, 2011
Muddiest Points!
Hey guys! I don't really understand the differences between the rough and smooth endoplasmic reticulums. Also, I would like to know how the cytoskeleton, cytoplasm, and lysosomes look like in a cell diagram when labeling them. It would also be great if someone explained the steps of mitosis in a more simpler way so it's easier to understand. Thanks! :)
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The difference between the rough and smooth endoplasmic reticulum are... The rough er has ribosomes attached to the outside making it "rough;" and the smooth er doesn't have any ribosomes on the surface making it "smooth." I hope I helped!
ReplyDeleteMitosis
ReplyDeleteInterphase- This is basically the normal state of the cell. It’s also getting ready for the process of cell division to begin. The nucleus and the nucleolus can be seen at this phase.
Prophase- This is where the cell decides that it is time to divide. It duplicates the DNA and prepares for the process of cell division. The nucleus and nucleolus begin to disappear and the duplicated chromosomes become visible.
Metaphase- Now, the centromeres, which is the region of the chromosomes, where the two sister chromatids attach forming an X, line up along the center of the cell. Spindle fibers connect the centromeres of the chromosomes to the two strands of spindle.
Anaphase- This is where the separation begins! Half of the chromosomes are pulled to one side of the cell and the other half are pulled the other way. When the chromosomes reach the end of the side of the cell, then it’s time for telophase.
Telophase- The division is finishing up during this step. The cell membrane starts to close in and splits the cell into two. Now, you are left with two separate cells each with half of the original DNA.
Interphase- Now the process starts all over again!!!
Hope I helped:)