The following diagram is meant to help you understand how the amount of DNA in a cell changes as the cell cycle progresses. On the diagram, identify two of the stages of the cell cycle being described and identify how much DNA exists per cell, where a cell is defined as a distinct nucleus. Note that the sequence of images highlights one of the chromosomes of the cell. The other chromosomes, while also present, are faded in the background. Stage in Cell Cycle: A Status of Chromosomes: (Only one of the chromosomes is intensely colored) NANA INNNNNNN wwwww wwwNYA wwwww WXXXX VANNNNNN www Amount of DNA Per Cell: C NNNNA NNNNNN WWXXXXX NNNNNNE WNNNN www B NNNNN Between 1X and 2X 2X D 1X
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- Draw diagrams for each phase of Mitosis in the correct order. Including Mitosis as part of the cell cycle is beneficial but not required. Identify the most important relevant details about each phase. There are at least 2 details or terms associated with each phase. Please use the proper names for parts such as centromeres, spindle fibres, etc.The figure below shows the number of chromosomes observed in an actively dividing cell at each stage of cell division. A B number of chromsomes per cell C 100 90 D 80 A bar graph comparing the number of chromosomes at different stages of cell division. 20 Which of the following best explains the change in the number of chromosomes between metaphase and anaphase? prophase metaphase anaphase telophase cytokinesis stage of cell division New chromosomes formed during prophase are doubled during anaphase. DNA replication occurs between metaphase and anaphase, doubling the number of chromosomes. During metaphase, a cell contains identical copies of each chromosome, and then trans- forms into sister chromatids. During anaphase, the chromatids are separated, each becoming independent chromo- somes in its respective new cellThe following phrases refer to the eukaryotic cell cycle. Select the single BEST choice for each phrase. Period when DNA is duplicated Last part of interphase in the parent cell Event that divides a cytoplasmic mass Period of cell growth before DNA duplication Period after DNA is duplicated Nuclear division that maintains the chromosome number Period when interphase begins in a cell Period commonly followed by cytokinesis - Period in which metaphase occurs Period prior to mitosis a. G2 b. Mitosis c. S d. G1 e. Cytokinesis
- Discuss the cell cycle with the aid of a diagram. 6-8 hours INTERPHASE Sphase DNA I replicated 6-10 hours G, phase Cell metabolically active; duplicates organelles and cytosolic components starts replicating G, phase Cell growth continues enzymes and other proteins are synthesized and replication of centrosomes is completed 46 hours Exit from cell cycle nondividing cell) centrosomes. MITOTIC (M) PHASE Prophase Metaphase Anaphase TelophaseThe following diagram shows a simulated microscopic view of a tissue sample taken from a patient where the cells have been squashed onto a slide and stained to visualize the cell's DNA. In the diagram, click or tap on the center of all cells that appear to be involved in any of the four stages of mitosis. Make sure to mark as close to the center of the cell as possible. In the diagram from Question 5, count the total number of cells visible and write the total number of cells in the space below: In the diagram from Question 5, count the number of cells that you had marked as currently undergoing any of the four phases of mitosis. How many cells in total are currently undergoing mitosis? Write this number in the space below: The mitotic index is a calculated value that represents the percentage of cells in a sample that are actively dividing. It involves counting the total number of cells present including those actively dividing or those in interphase, the total number of cells that…Select the phase of the cell cycle depicted in the image below where the paired chromosomes separate and move to opposite sides of the cell: prophase telophase interphase anaphase metaphase
- Read the discussion of the cell cycle, mitosis, and cytokinesis, pages 00-4to7.In the table below, describe briefly the major events of each part of the cell cycle. (You might want to turn the table sideways so you can write the long way in each box.) Interphase M phase (mitotic cell division) G1 G2 Mitosis Cytokinesis S Prophase | Metaphase Anaphase TelophaseThe phases of mitosis are shown in Figure 6.4. Mitosis is the type of nuclear division that occurs when an animal or plant grows larger and when injury heals. Two daughter cells result because there is only one round of division, and it keeps the chromosome number constant (same as the parent cell). The prophase cell in Figure 6.4 has the same number of chromosomes as the telophase nuclei in Figure 6.4. Explain the different appearance of the chromosomes.Consider the figure below showing a single cell in metaphase of mitosis. This phase is characterized by the organized alignment of the chromosomes on the metaphase plate. Discuss the importance of having the chromosomes organized in this way for the subsequent phases of mitosis.
- v Part A Match the description with the stage of the cell cycle. Reset Help Centrioles move to opposite ends of the cell DNA condenses to form chromosomes Chromosomes line up in the middle of the cell Chromosomes Split and Move to opposite ends of the cell Cell begins to split into two DNA replicates Interphase Prophase Metaphase Anaphase Telophase UnitConversionSE.pdf Type here to search 99+ RB (1Belgy Name: Date: Period: Mitosis Worksheet The diagram below shows six cells in various phases of the cell cycle. Note the cells are not arranged in the order in which mitosis occurs and one of the phases of mitosis occurs twice. Use the diagram to answer questions 1-7. Phases of the Cell Cycle 1) Cells A and early stage of the same phase of mitosis. What phase is it? 2) Which cell is in mg 3) Which cell rst phas sis? 4) In cell A, what structure is labeled X? 5) Which cell is in the "in between" phase of mitosis? 6) Place the diagrams in order from first to last. 7) Are the cells depicted plant animal cells? Explain your answer. 8) What is the longest phase of the cell cycle? 9) Why is mitosis important?Select the phase of the cell cycle depicted in the image below where spindle fibers align the chromosomes along the middle of the cell nucleus interphase prophase anaphase telophase metaphase