Cell Life Cycle Essay

Interphase: This particular stage is divided into three phases, G1 (first gap), S (synthesis), and G2 (second gap). During all three phases, the cell grows by producing proteins and other organelles within the cytoplasm. However, chromosomes are replicated only during the S phase. In all, a cell grows (G1), continues to grow as it duplicates its

This is the story of a cell, a young cell. This cell’s goal was to have the most powerful mitochondria of any other cell she knew. The mitochondria gave energy. She knew if she had a strong mitochondria, her being would be powerful and strong.

You would expect for the normal lung cells to not have to divide as often because those cells are not exposed to many things through out the day. The normal stomach cells on the other hand would be expected to divide more because there is a lot of acidity in the stomach and therefore those cells are exposed to a lot of things on a daily basis. As for the ovaries you would expect that there would be a little more cell division because that is where new life is formed and all of the things that come along with that which means that there should be more division going on.

You may use the lab manual, pre-lab lectures, and credible internet resources, however you may not use your cell bio lab classmates as a resource. You will most likely see this material again on the Final and I highly encourage you to work individually and seek help from myself or your TA. Plagiarism will result in an automatic zero.

Although mitosis is just a fraction of time compared to interphase it can be divided into four distinct subphases. If we start viewing a cell under a brightfield microscope right at the end of interphase subphase G2 we would see that throughout the interphase process (fig 1) the cell has grown considerably in size due to production of extra mitochondria and endoplasmic reticulum. The cell has also gone through the labor of duplicating all of its chromosomes, a process known as DNA synthesis. Now that the cell has made all of these preparations it's time to start prophase (fig 2), the first stage of the mitotic phase. This stage is visibly identified by the chromatin becoming the tightly formed chromosomes. During the lab we were able to view these newly formed chromosomes best on the onion root tip

Consuming too many carbs can lead to low other nutrient intake, excess energy, dental carries, weight gain and hyperglycemia.

The cell cycle is a series of stages that occurs when a new cells makes the division from the parent cell to two daughter cells. This is a stage in cellular reproduction. The cell cycle consists of three phases, interphase, mitosis, and cytokinesis. During Interphase, a cell will continue to perform its functions as usual. The time frame for Interphase varies; while an embryonic cell will take just a few hours to complete the cycle, a stem cell from an adult can take 24 hours (Mader, Windelspecht, 2015). After the interphase stage completes itself, a complete nuclear division happens and mitosis occurs. During the stage of mitosis, the daughter cells will receive the same amounts of the contents of the parent cell. Throughout the last stage, in the cytoplasm there is a division known as Cytokinesis (Mader, Windelspecht, 2015). Cytokinesis occurs differently in plant cells than it does in animal cells, as the cell wall around the plant prevents the process from happening the same way. Instead, a new plasma membrane and cell walls are built are built between the daughter cells. However, in animal cells a single cell will become two (Mader, Windelspecht, 2015).

Mitosis is the process of duplicating nuclear material one cell becomes two cells. A cell contains 46 chromosomes, this is known as diploid. This process involves prophase, metaphase, anaphase, and telophase. Mitosis ensures the continuation of the organism and helps the body build and repair. Meiosis on the other hand is for production of haploid cells, 23 chromosomes, that together with another human, new organisms are created.

One the above date and time Officer Sandula, Officer Johnston and myself went to Cell 8 to move three inmates out of Cell Block 8 that had been causing disturbances throughout the night, inmates; Christopher James Knight (A-13483), Montel Lamar Rice (A-15526) and, Devon Allen Soltysiak (A-15794). The disturbances included throwing food and toilet paper at the walls and ceiling, taking recreation equipment out of designated zones, not wearing full jail attire and clogging the sink by clogging the drain with toilet paper and covering the plug with a bowl of the cell causing flooding. During having the inmates pack up their personal items, inmate Knight said he wanted to go to a holding cell so he could yell through the vents to his wife Melanie Dice Knight (A-15084) and that he had been trying to move for 2 weeks by acting out. Knight then pulled out a tooth brush with one end filed to a sharpened point. He asked to be taken to a holding cell for having a “shank”, I replied no and he was going to another cell for the meantime. Officer Johnston confiscated the toothbrush and I escorted Knight to his new cell, he asked again to be taken to a holding cell but I refused once more so in response he hit the ceiling near a sprinkler head with his mattress. After placing inmate Knight in Cell 5 he wrote a derogatory threatening letter daring to be moved to a Holding Cell. While in cell 5 he left his mattress and property on the community table and complained that he was going to fight with inmate Terrance Walter Newton (A-15144) who he thought was in Cell 5 but was in Cell 3. Officer Johnston, Officer Sandula and I then removed Knight from Cell 5 and put him in holding Cell A. Shortly

3. Water is a precious natural resource in Florida and it is said that supplies are dwindling. Desalinization (removing salt from) ocean water has been recommended as a solution to the problem. Why shouldn’t we drink salt water? Explain.

Before, biologists assumed all microbes are bad for the human body (automatically thought of pathogens), caused many diseases and harm our body fundamental systems. In addition, the biologists think that our body is already built which had all the functions required to maintain our health. However, the attitude has changed over the last decade. The biologists characterized the most prevalent species of microbes in the body, and found out that these collective microbes do not threaten us, and they also are important part of human bodies.

The cell cycle has four main stages. The cell cycle is the regular pattern of growth. The four stages consist of Gap 1 (G1), Synthesis (S), Gap 2 (G2), and Mitosis (M). Gap 1, consists of a cell that carries its normal functions. Calls also increase in size, and the organelles increase in number. A cell will spend the most time in this phase. But it also depends on the cell type to see how long it will spend in this phase. During this phase the cell has to pass a critical checkpoint before it can continue into the (S) stage, also called the Synthesis stage. It would be dangerous for a cell to keep dividing if the certain conditions were not met. The cells in this stage also need signals from the other cells to tell the if division is needed. Now the next stage is the Synthesis stage. During this phase the cell makes a copy of it’s nuclear DNA. By the end of the (S) phase DNA appears grainy in photos and the cell nucleus contains two complete sets of DNA. Gap 2, is the third stage of the cell cycle. The cells continue doing there thing and more growth occurs. This phase is like the checkpoint, everything in the cell has to be going right for the cell to be able to enter mitosis.

cell will look just like any other 'normal' cell although this is far from the

Mitosis is one of two main methods of cell replication, the other being meiosis. It is “the simple duplication of a cell and all of its parts” resulting from the splitting of a cell. The ‘parent’ or original cell splits, duplicating its DNA (packaged in chromosomes) producing two ‘daughter’ or new cells with the same genetic code. There are four stages of mitosis; Prophase, Metaphase, Anaphase and Telophase. Interphase is not an official phase of mitosis as the cell is at ‘rest’ and not being divided during this phase. It is often called one of the phases of mitosis as it is one of the stages in the life cycle of a cell; however it is not a phase of mitosis due to the fact that no division takes place.

The main focus of this lab was to be able to understand the different phases of mitosis and the cell cycle and also identify what those stages may look like. Mitosis is the process in which concerns the production of new cells. For example, when apoptosis(cell death) the process of Mitosis begins to replace the dead cells. To be able to familiarize ourselves with this concept, we took a sample of an onion root and had it put through a process to be able to look at the different phases under the microscope. We found that the majority of the cells were mostly undergoing Interphase or Prophase which are the phases in charge of crossing over of DNA and where the chromosomes then become visible and the nuclear envelope dissipates. The conclusion of this lab was that Mitosis is essential for the production of new cells. In the case of the onion root sample, the cells were damaged leading to the tester to undergo Mitotic cell division and it was found that mainly Interphase and Prophase were the stages that occurred in this lab.