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Which event occurs in S-phase?
Question 4 options:
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Mitotic spindle is created. |
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Normal growth and cell function |
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Energy stores are replenished |
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Karyokinesis |
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None of the above |
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- Question 5 Which of the following does NOT begin during prophase? O Separation of sister chromatids Centrosomes start to migrate to the poles of the cell Fragmentation of the nuclear envelope Condensation/tighter packaging of DNA into chromatids Question 6Which event occurs in S-phase? prastrca Mitotic spindle is created. O Normal growth and cell function Energy stores are replenished Karyokinesis None of the aboveBelgy 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?
- QUESTION 1 If cells do not pass the G1 checkpoint what happens to them? They begin mitosis They begin S phase O They die They go into GO QUESTION 2 During the early mitotic checkpoint what does the cell monitor? DNA damage Microtubule attachment to kinetochores Presence of growth factors Successful duplication of chromosomesWhich phase of mitosis would nucleoi disappear? Question 3 options: prophase telophase prometaphase anaphase metaphaseWhen do sister chromatids separate in meosis? Question 30 options: Metaphase II Prophase II Prophase I Metaphase I
- Which of the following best describes the G2 phase of the cell cycle? Question 2 options: It is the synthesis phase of the cell cycle where DNA is copied. It is the second growth phase used to finish preparation for cell division. It is the phase of the cell cycle when the cells are dividing to form identical cells. It is the first growth phase used to increase the size of the cell after it has dividedMIosis Method: Observations of onion root tip squash. Scan the microscope under the 10x objective. Look for the region that has large nuclei relative to the size of the cell; among these cells will be found cells displaying stages of mitosis. Switch to the 40X objective to make closer observations. Since prophase and prometaphase are difficult to distinguish, classify all these cells as prophase. Record your observations in the table provided. Examples are shown in the figure below. Interphase Early Prophase Mid Prophase 10 Metaphase Anaphase Telophase Exercises: 1. Find and draw a cell showing each stage of mitosis. Interphase Prophase Metaphase Anaphase Telophase , 2. What is a distinguishing visible feature of each stage of mitosis? Interphase: Prophase: Metaphase: Anaphase: Telophase: Many of the cells of the root meristem are not undergoing mitosis; rather they Based upon the interpretations 3. are in a stage called 21Answer these 3 questions: just write correct answers. The cell in image is ... in interphase S phase mitosis G1 phase and one conclusion that can be drawn is : TRAP150 co-localizes with DNA TRAP 150 is cytoplasmic a clear conclusion cannot be drawn TRAP 150 does not co localize with dna in previous figure, Aurora B : co-localizes with TRAP150 it is unclear where Aurora B is localized is nuclea co-localized with DNA is cytoplasmic
- Answer these questions: 1. During what phase of the cell cycle does DNA replication occur? 2. During mitosis, at what phase do chromosomes first become visible? 3. During what 2 phases of mitosis are chromosomes each composed of two chromatids? 4. During what 2 phases of mitosis are chromosomes each composed of one chromatid? 5. How does cytokinesis differ in plants and animals? 6. What is the term used to refer to the "division of the cytoplasm"? 7. Are the two cells created from mitosis the genetically identical or different? 8. Write the stages of the cell's life cycle in order, starting with the stage immediately after cytokinesis.QUESTION 2 Which statement(s) about mitosis is/are true? Daughter cells produced by mitosis have cytoplasmic content (ie, organelles, cytoplasm, number of mitochondria, etc.) that is identical Chromosomes condense during cytokinesis Homologous chromosomes on separate kinetochores line up together at the metaphase plate Daughter cells obtain a copy of each chromatid from their parent cell During prophase, the mitotic spindle developsQUESTION 7 Match the stage of mitotic cell division with its description. chromosomes line up in the middle of the cell on spindle fibers cytoplasmic division results in two new cells A. interphase sister chromatids separate and daughter chromosomes begin moving to gopposite poles B. anaphase C. telophase nuclear membrane disintegrates, DNA condenses, spindle highways begin to D. metaphase be formed E. prophase F. cytokinesis daughter chromosomes arrive at opposite ends of the cell, the cell membrane pinches in, nuclear membranes form DNA replication and organelle doubling