Sally the Cell Cells are constantly going through the cell cycle to duplicate themselves. The cell cycle consists of many different stages. Some stages take more time to complete than others. The phases of the cell cycle are gap phase 1 (G1), synthesis (S), gap phase 2 (G2), prophase, prometaphase, metaphase, anaphase, telophase, and cytokinesis. G1, S, and G2 make up interphase, while mitosis and cytokinesis make up the M phase. I, Sally the cell, am going to tell you about my journey in the cell cycle. I have just recently came out of the cell cycle, so I can remember every stage of the cell cycle in detail. Cells begin the cell cycle in a stage called gap phase 1. In this stage I grew for a very long time. I grew to prepare myself for
…show more content…
In the synthesis phase I replicated my DNA. This phase is very important because if the DNA is not replicated identically it could cause abnormalities in me (the cell). The S phase produces the two sister chromatids, and they are connected at the centromere. The centromere is a point of constriction containing certain repeated DNA sequences that bind to specific proteins. This phase is not as long as the G1, but it is the second longest phase in the cell cycle. After S phase, I move to the last stage of interphase. The last phase of interphase is G2. G2 is a phase in which I grow like gap phase 1. Unlike G1, G2 prepares the cell for cell division in the M phase. This is called gap phase 2 because it fills the gap between synthesis and mitosis. In G2 organelles replicate, and microtubules start to attach at the spindle. Also, chromosomes coil very tightly in G2. As you can see, the gap phase 2 was a pretty quick one for me. Interphase is done which means I will move on to the M …show more content…
During prophase, my chromosomes condensed and were two sister chromatids connected by the centromere. The spindle begins to form and my nuclear envelope breaks down. In animal cells only the centrioles are replicated. Microtubules arrange around them in an arrangement called an aster. The endoplasmic reticulum also breaks down in prophase. That’s all for prophase, and next is prometaphase. In prometaphase the chromosomes that were condensed in prophase attach themselves to the spindle by kinetochores. The kinetochores are attached at the centromere. This allows my chromosomes to be able to start movement towards the middle of the cell. The spindle fiber continues to form and the nuclear envelope dissembles. As prometaphase comes to an end, my chromosomes began moving to the equator. Next, I moved onto metaphase. During metaphase, my chromosomes aligned at my equator. In metaphase there is an indivisible plate called the metaphase plate. All of my centromeres were placed around this plate in a circular arrangement. This gives an even amount of chromosomes to each sister chromatid, which is needed for ideal cell replication. That is all for metaphase, and now we continue on to the last couple steps of
In the synthesis phase I replicated my DNA. This phase is very important because if the DNA is not replicated identically it could cause abnormalities in me (the cell). The S phase produces the two sister chromatids, and they are connected at the centromere. The centromere is a point of constriction containing certain repeated DNA sequences that bind to specific proteins. This phase is not as long as the G1, but it is the second longest phase in the cell cycle. After S phase, I move to the last stage of interphase. The last phase of interphase is G2. G2 is a phase in which I grow like gap phase 1. Unlike G1, G2 prepares the cell for cell division in the M phase. This is called gap phase 2 because it fills the gap between synthesis and mitosis. In G2 organelles replicate, and microtubules start to attach at the spindle. Also, chromosomes coil very tightly in G2. As you can see, the gap phase 2 was a pretty quick one for me. Interphase is done which means I will move on to the M …show more content…
During prophase, my chromosomes condensed and were two sister chromatids connected by the centromere. The spindle begins to form and my nuclear envelope breaks down. In animal cells only the centrioles are replicated. Microtubules arrange around them in an arrangement called an aster. The endoplasmic reticulum also breaks down in prophase. That’s all for prophase, and next is prometaphase. In prometaphase the chromosomes that were condensed in prophase attach themselves to the spindle by kinetochores. The kinetochores are attached at the centromere. This allows my chromosomes to be able to start movement towards the middle of the cell. The spindle fiber continues to form and the nuclear envelope dissembles. As prometaphase comes to an end, my chromosomes began moving to the equator. Next, I moved onto metaphase. During metaphase, my chromosomes aligned at my equator. In metaphase there is an indivisible plate called the metaphase plate. All of my centromeres were placed around this plate in a circular arrangement. This gives an even amount of chromosomes to each sister chromatid, which is needed for ideal cell replication. That is all for metaphase, and now we continue on to the last couple steps of