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- Q 1/15Score 0A photomicrograph of onion root tip cells during mitosis is shown below. Which phase of mitosis is occurring in the cell indicated by the arrow?29MetaphaseTelophaseProphaseAnaphase
15 questions
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- Q1A photomicrograph of onion root tip cells during mitosis is shown below. Which phase of mitosis is occurring in the cell indicated by the arrow?MetaphaseTelophaseProphaseAnaphase60sBIOL.5a
- Q2Which of these must occur before the cell cycle so that two daughter cells can be produced?The cytoplasm must be separatedThe nuclear membrane must be dissolvedThe DNA must be replicatedThe chromosomes must be joined60sBIOL.5a
- Q3Scientists can bioengineer skin in a laboratory to treat severe burns and other types of skin injuries. This bioengineered tissue is grown from living cells. The cellular process that enables the cells to grow and develop into tissue is -meiosismitosisbinary fissioninterphase60sBIOL.5a
- Q4The diagram shows cells in different phases of mitosis. A student is trying to find a cell in a particular phase of mitosis. The student is looking for evidence that spindle fibers are separating the chromosomes to ensure that each new nucleus has one copy of each chromosome. Which cell is in the phase of mitosis that the student is searching for?Cell 1Cell 3Cell 2Cell 460sBIOL.5a
- Q560sBIOL.5a
- Q6Part of the cell cycle is shown in this simplified model. This part of the cell cycle is best described as the process that -duplicates the DNAsynthesizes new moleculescompletes cell divisionmaintains genetic homeostasis60sBIOL.5a
- Q7The activities in the cell cycle occur during specific phases. In which phase of the cell cycle does the cell grow in size, and prepare to replicate DNA?MitosisG1 PhaseS phaseG2 phase60sBIOL.5a
- Q8This model of the cell cycle includes two arrows that each represent a process in the cycle. What do the two arrows represent?Arrow 1 represents prophase, and Arrow 2 represents interphase.Arrow 1 represents mitosis, and Arrow 2 represents meiosis.Arrow 1 represents meiosis, and Arrow 2 represents prophase.Arrow 1 represents interphase, and Arrow 2 represents mitosis.60sBIOL.5a
- Q9Telophase is a stage of a cellular process that begins after the chromosomes have moved to opposite poles of the cell. During which cellular process does telophase occur?InterphaseTranslationTranscriptionMitosis60sBIOL.5a
- Q10Which of the following is a correct statement about the events of the cell cycle?Mitosis is usually the longest phase of the cell cycle when the cell is growing.Interphase consists of the G1, S, G2 phases, and mitosis.Little happens during G1 and G2 phases of the cell cycle.During G2, the cell grows and prepares to dissolve the nuclear membrane.60sBIOL.5a
- Q11The M phase of the cell cycle consists of both mitosis and cytokinesis. Mitosis refers to ____________, whereas cytokinesis refers to _______.Replication of nuclear material, cytoplasmic divisionNuclear division, cell/cytoplasmic divisionCell/cytoplasmic division, nuclear divisionNuclear division, replication of nuclear material60sBIOL.5a
- Q12A laboratory assistant was told to watch the mitosis of a eukaryotic cell under the microscope and inform the lead scientist when the cell entered prophase. What should the assistant expect to look for to indicate that the cell is in prophase?The sister chromatids separate into individual chromosomes and are moved apart.The chromosomes line up across the center of the cell, and each chromosome is connected to a spindle fiber.The chromosomes gather at opposite ends of the cell and two new nuclear envelopes form around this genetic material.The chromatin condenses into chromosomes, the nuclear envelope breaks down, and a spindle begins to form.60sBIOL.5a
- Q13The cell cycle is important to the growth of organisms. In humans, for example, mitosis begins shortly after the egg is fertilized by the sperm, producing vast numbers of cells needed for the embryo to take form. During the process of mitosis, one parent cell divides to create –three new genetically identical daughter cells.four new genetically different daughter cells.two new genetically different daughter cells.two new genetically identical daughter cells.60sBIOL.5a
- Q14All forms of cancer are characterized by –the spreading of abnormal cells to tissues across the bodyan abnormal, unregulated production of cellsthe aggregation of cells into a mass called a tumorthe inhibition of DNA replication in affected cells60sBIOL.5c
- Q15A scientist studying cancer collected data from various types of cells. The data was placed into the line graph below. Which of the following statements explains why the cells depicted in line A are most likely cancerous?The cancer cells have experienced a disruption of the cell cycle and cannot control cell division.The cancer cells stopped dividing when they became tightly packed together.The cancer cells are unable to synthesize DNA.The cancer cells have begun to die off.60sBIOL.5c
