Preview

thdhbxs

Satisfactory Essays
Open Document
Open Document
345 Words
Grammar
Grammar
Plagiarism
Plagiarism
Writing
Writing
Score
Score
thdhbxs
Cell Cycle Conclusion

A mitosis lab was recently done. An experiment was performed that studied the each phase in the cell cycle.The hypothesis for this lab stated, "Interphase will be the longest phase and anaphase will be the shortest phase.” Mitosis is the process where of cell division that results in two daughter cells each having the same number and kind of chromosomes as the parent nucleus. The cell cycle is the cycle of growth and asexual reproduction of a cell, consisting of interphase followed in actively dividing cells by prophase, metaphase, anaphase, and telophase. Therefore, it would make sense for each phase to take a certain amount of time. Onion cells were looked at, each going through a phase of the cell cycle. Tally marks were kept for the number of cells that displayed a certain phase. It was found that interphase had the most tallies and metaphase had the least. Based on this data, the hypothesis stated above was not fully supported. This data doesn't fully support the hypothesis because although interphase was the longest phase anaphase was not the shortest phase. Metaphase was the shortest. Interphase takes up 73% of the cell cycle; which is 160 out of 220 total cells. Telophase takes up 34 cells, which is 16%. Anaphase takes up 5 cells which is 2%. Metaphase takes up 2 cells, which is .10%. Prophase takes up 19 cells, which is 9%. This makes sense because interphase is suppose to take up about 75% of the cell cycle; which it does. It is predicted that further study could be conducted as to change the type of cell that the cell cycle would be viewed in. Perhaps an animal cell would change the results. It is predicted that the cytokinesis phase will be different because instead of the split chromosomes moving toward the walls of the cell until they split they would be pulled apart. Also interphase would remain the longest phase in the cell cycle while the phase in mitosis might change. From

You May Also Find These Documents Helpful

  • Good Essays

    Bio341 Unit 1 Essay

    • 718 Words
    • 3 Pages

    2. For each of the events in mitotic phase, give the stage of mitotic phase in which it occurs…

    • 718 Words
    • 3 Pages
    Good Essays
  • Good Essays

    LabPaq mitios

    • 520 Words
    • 3 Pages

    Mitosis is easily observed in cells that are growing at a rapid pace such as whitefish blastula or onion root tips, which was used in this lab experiment. The root tips contain and area called the apical meristem that has the highest percentage of cells undergoing mitosis. The whitefish blastula is formed directly after the egg is fertilized. This is a period of rapid growth and numerous cellular divisions where mitosis can be observed. In mitosis the cell is in interphase, and have a distinct nucleus and nucleoli where the thin threads of chromatin thicken into distinct chromosomes and the nuclear evvelope breaks open releasing them into the cytoplasm. The firs signs of the spindle begin to appear, next the cell begins metaphase, where the spindle attaches to the Centromere of each chromosome and moves them to the same level in the middle of the cell. This level position is called the metaphase plate. Anaphase begins when the chromatids are separated and pulled to opposite poles, then the final stage is telophase. The nuclear envelope is reformed and the chromosomes gradually uncoil. Cytokinesis may occur, in which, a cleavage furrow will form and the two daughter cells will separate. Meiosis is more complex and involves two nuclear divisions. The…

    • 520 Words
    • 3 Pages
    Good Essays
  • Better Essays

    Purpose: The purpose of this lab was to calculate the amount of time that was spent by a cell in each of the phases of mitosis. Also, it is used to be able to compare the process of mitosis between plant and animal cells.…

    • 1242 Words
    • 5 Pages
    Better Essays
  • Good Essays

    AP I exam study guide

    • 372 Words
    • 2 Pages

    State the stages of cell division in order and know how the nucleus/chromosomes look during each phase of cell division.…

    • 372 Words
    • 2 Pages
    Good Essays
  • Good Essays

    What are the two phases of the cell cycle? What are the three stages of interphase?…

    • 1727 Words
    • 7 Pages
    Good Essays
  • Good Essays

    A&P Discussion

    • 532 Words
    • 3 Pages

    The cell cycle is important as old cells get damaged and have to be replaced with new cells for the functioning of the body. If new cells are not formed the human body will stop working within a few minutes. The cell cycle is defined as an orderly sequence of events in which a somatic cell duplicates its contents and divides in two. When a cell reproduces, it must replicate all its chromosomes to pass its genes to the next generation of cells. The cell cycle consists of two major periods: interphase, when a cell is not dividing, and the mitotic phase, when a cell is dividing. During interphase the cell replicates its DNA. Interphase is a stage of high metabolic activity. Interphase has three phases: G1, S, and G2. The G1 phase is the interval between the mitotic phase and the S phase. During this phase the cell is active. It replicates most of its organelles and cytosolic components but not its DNA. The replication of centrosomes also begins in the G1 phase. For a cell with a total cell cycle time of 24 hours, G1 lasts 8 to 10 hours. Cells that remain in G1 for a very long time are destined to divide again in G0 phase. Most nerve and muscle cells are in this phase. Once a cell enters the S phase, it is committed to go through the rest of the cycle. The S phase last about 8 hours. During the S phase, DNA replication occurs. As a result, the two identical cells formed during cell division later in the cycle will have the same genetic material. The G2 phase last about 4-6 hours. During G2, cell growth continues, enzymes and other proteins are synthesized in preparation for cell division, and the replication of centrosomes is completed. The mitotic phase of the cell cycle, which results in the formation of two new cells, consists of a nuclear division, which is called mitosis, and a cytoplasmic division, which is called cytokinesis, to form two identical cells. The process of mitosis results in the exact partitioning of genetic information. During prophase, the…

    • 532 Words
    • 3 Pages
    Good Essays
  • Good Essays

    The cell cycle begins in the G1 phase. This phase is where the cell carries out its normal functions. During this phase, however, the cell passes through a vital check point before it enters the synthesis phase. Synthesis, by definition, means combining parts to make a whole. During this stage the cell makes a copy of its DNA. By the end of the “S” stage the nucleus of the cell has two complete sets of DNA. During the G2 stage cells continue normal functions and have additional growth. This stage also contains a check point to make sure all is well with the cell before continuing to the next stage, mitosis. Mitosis is where the cell’s nucleus and its contents divide. Through this stage the nuclear membrane dissolves and DNA condenses around…

    • 166 Words
    • 1 Page
    Good Essays
  • Satisfactory Essays

    Euka

    • 280 Words
    • 2 Pages

    The figure demonstrates the five distinct phases of the cell cycle: G0, in which cells are resting or quiescent; G1, in which cells undergo RNA and protein synthesis necessary for entry in to S-phase; S-phase, in which cells undergo DNA replication; G2, in which cells undergo RNA and protein synthesis in preparation for mitosis; and M-phase, in which cells undergo mitosis and cytokinesis.…

    • 280 Words
    • 2 Pages
    Satisfactory Essays
  • Powerful Essays

    Enzymes

    • 2259 Words
    • 10 Pages

    Discuss the process of cell division in animals. Include a description of mitosis and cytokinesis,…

    • 2259 Words
    • 10 Pages
    Powerful Essays
  • Satisfactory Essays

    Earth and Space Science

    • 759 Words
    • 5 Pages

    You have conducted an experiment following the cell cycle of an animal cell. Each link below leads to a drawing of the slides you viewed from each phase of the cell’s reproduction. Click the link to a slide and identify the subphase of mitosis it shows. Then number the slides 1 to 4 in the order they occur.…

    • 759 Words
    • 5 Pages
    Satisfactory Essays
  • Good Essays

    The cell cycle involves actively dividing eukaryotic cells passing through a series of stages known collectively as the cell cycle. The two gap phases (G1 and G2) and S (for synthesis) phase, in which the genetic material is duplicated and an M phase, in which mitosis partitions the genetic material and the cell divides, make up the cell cycle. In G1 cellular content is duplicated accept chromosomes. In S phase, each of the 46 chromosomes is duplicated by the cell. G2 double checks this looking to make some repairs if necessary. Mitosis is the process where by sister chromatids are split up to form two different cells. Once this has happened the whole process is free to start over making it a cycle.…

    • 733 Words
    • 2 Pages
    Good Essays
  • Good Essays

    - A cell spends about 90% of its life in interphase of the cell cycle, while it spends only about 10% of its life in M phase.…

    • 1285 Words
    • 6 Pages
    Good Essays
  • Satisfactory Essays

    The Eukaryotic Cell Cycle

    • 392 Words
    • 2 Pages

    There is two stages in M-phase; the first stage is called mitosis. Mitosis is the nuclear division of the cell, separating the two copies of the genome and forming daughter nuclei. There are four stages in mitosis: prophase, metaphase, anaphase and telophase. Multiple changes occur in prophase including the coiling of the chromatin into chromosomes, the disappearance of the nuclear envelope and nucleoli, the migration of the centrosomes toward opposite poles and the construction of spindle apparatus, which are composed of protein fibers called microtubules. The next stage is called metaphase, where the chromosomes line up at the middle of the cell because the microtubules push and pull them there. The third stage, anaphase, consists of sister chromatids separating and being pulled toward opposite poles. The last phase of mitosis is telophase, which is when the chromosomes uncoil resulting in chromatin. During telophase two new nuclear enveloped appear and spindle apparatus breaks down (Mrs. Weiland, 11/19/15).…

    • 392 Words
    • 2 Pages
    Satisfactory Essays
  • Satisfactory Essays

    Mitosis and Cell

    • 472 Words
    • 2 Pages

    In this virtual lab activity, you will be observing the cell cycle in the tip of an onion root. The root tip is responsible for the downward growth of the root and is one of the regions in the plant where cells are actively dividing and growing. Because of this, the root tip is an excellent system in which to observe the entire cell cycle, including the processes of nuclear division (mitosis) and cell division (cytokinesis). Puppies increase in size as their cells grow and divide. Almost all cells complete a full cell cycle that includes interphase and cell division. In interphase, cells serve their specialized functions, grow, and copy their genetic material. Mitosis is the first stage of cell division, in which the copied chromosomes are separated into two new nuclei. Then in cytokinesis the cell divides into two daughter cells. If no mutations or errors occur, the genetic material in each daughter cell is identical to what was in the original cell.…

    • 472 Words
    • 2 Pages
    Satisfactory Essays
  • Good Essays

    There are two main stages of the cell cycle, with multiple subdivisions within each. Interphase is the first stage, and it’s composed of G1 (contents of the cell are duplicated sans the chromosomes), S (chromosomal duplication), and G2 (checkpoints) phase. After interphase, there is the mitotic phase. The mitotic phase is composed of mitosis (division) and then cytokinesis (division of cytoplasm=2 daughter cells). The cell cycle ultimately produces two daughter cells. These processes allow the (complete) genetic material present in a cell/organism to be passed on to the daughter cells of cell division. The phases of Interphase ensure this for example. During the S phase, DNA is duplicated, aka 46 chromosomes. This allows the cells to split so they can have equal amounts of genetic material which are passed on to the daughter cells. The phase of G2 has cell checkpoints to ensure not errors occurred in the duplication process. After the volume is doubled, the cell undergoes the mitotic phases. Under these…

    • 2032 Words
    • 9 Pages
    Good Essays