Which of the following is least likely to result in the formation of a cancerous cell? A Dysfunction results in the permanent activation of a cell division pathway in the absence of the appropriate ligand. B с D Separation of chromatids during mitosis occurs without all centromeres being attached to spindle fibers from both poles. A dysfunction in a cell cycle checkpoint prevents a cell from entering the S phase. A dysfunction causes the inability to produce cancer-suppressing proteins.

Which of the following is least likely to result in the formation of a cancerous cell? A Dysfunction results in the permanent activation of a cell division pathway in the absence of the appropriate ligand. B с D Separation of chromatids during mitosis occurs without all centromeres being attached to spindle fibers from both poles. A dysfunction in a cell cycle checkpoint prevents a cell from entering the S phase. A dysfunction causes the inability to produce cancer-suppressing proteins.

Biology (MindTap Course List)

11th Edition

ISBN:9781337392938

Author:Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. Berg

Publisher:Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. Berg

Chapter33: Plant Structure, Growth, And Development

Section: Chapter Questions

Problem 10TYU: Cell differentiation occurs through _______________, whereas morphogenesis involves _______________....

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Chromosomes are duplicated during what portion of the cell cycle? a. G 1 phase b. S phase c. prophase d. prometaphase
Cell differentiation occurs through _______________, whereas morphogenesis involves _______________. (a) pattern formation; cell determination (b) cell division; cell expansion (c) cell expansion; pattern formation (d) cell determination; cell division (e) cell determination; pattern formation
Why is cell furrowing important in cell division? If cytokinesis did not occur, what would be the end result?
A cell can normally halt its progression through the cell cycle at different checkpoints. Which of the following best predicts a reason for a cell to halt its progression through the cell cycle between the G1 and the S phases? A B incorrect attachment of spindle fibers to sister chromatids с insufficient accumulation of nucleotides D mitosis-facilitating enzymes have not been synthesized errors in DNA replication during G1
Which of the following is NOT a checkpoint that controls the progression of cell cycle? The metaphase checkpoint determines if all chromosomes are attached to the spindle apparatus Cytokinesis involves the formation of cleavage furrow to separate the cells The G2 checkpoint checks for DNA damage and determines if all of the DNA is replicated Cyclins and cyclin dependent kinases are protejns that are responsible for advancing a cell through the phases of the cell cycle
How can defects in the regulation of cell-cyle checkpoints would affect cells and explain how these defects relate to uncontrolled division in cancer and cancer progression? Describe the movements of chromosomes and the status of the microtubules spindle during interphase, prophase, metaphase, anaphase, and telophase? Explain the movement of chromosomes during stages of meoisis to produce sperm and eggs?
The cell cycle is highly regulated and involves many steps to ensure that a cell is ready to divide. For this reason, cells cycle between interphase and mitosis. Which of the following describes the consequence of a severe disruption of interphase in cells in healthy tissue? Disruption of interphase will have no effect on mitosis because they are two completely independent processes. Disruption of interphase will lead to a faster and more efficient mitotic cycle, which will result in increased cell division and tissue growth. Disruption of interphase will trigger the cell to switch to a mitotic phase and repeatedly divide, which will result in the massive proliferation of the cells and heightened tissue growth. Disruption of interphase will result in the cell being unable to synthesize proteins and organelles required to divide, which will result in the cell not passing key checkpoints and ceasing to divide.
In your own words, explain how cancer cells differ from normal cells in regard to the following: Molecular controls of the cell cycle (include Cdk and Cdk/cyclin complexes, p53 gene/protein, Rb gene/protein in response)
p53 gene, as is the Rb gene, is a tumor suppressor gene. p53 protein binds to DNA leading to the simulation of p21 that work together with cdk2. When p21 is defective and cannot joined to cdk2 the cell cannot pass through to the next stage of cell division. Mutated p53 cannot bind to DNA in an effective way, and therefore the p21 protein is not available to act as the 'stop signal' for cell division. Thus cells divide uncontrollably, and form tumors. Hi, can you please elaborate on this: based on the info above, what is the relationship between genetics and environment in the development of these type of cancer. Which factor (genetics or environment) is playing a larger role in the generation of these types of cancers?
Which of the following describes the most likely property of cancer cells, other than un- controllable division? A inability of chromosomes to align during the metaphase B с D alteration of the cell cycle sequence inability to undergo apoptosis inability to form spindle fibers
The process of cellular reproduction or divisions is a heavily regulated process for a number of different reasons. In the case of the eukaryotic cell there are a number of different checkpoints that a cell must pass before it can continue on. Please explain what those checkpoints are looking for and where those checkpoints are in the cell cycle. If a cell doesn’t pass any of these checkpoints what happens to those cells?
BPA is a chemical compound that has historically been used in themanufacture of plastic products. However, cells often mistake BPAcompounds for hormones that accelerate the cell cycle. Because ofthis, BPA is associated with an increased risk of certain cancers. Question: How might BPA interact with the cell cycle and its checkpoints?