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Core - Molecular Biology

    Chapter 17

    Cell Proliferation

    17.1 : What is the Cell Cycle?

    17.1 : What is the Cell Cycle?

    The cell cycle refers to the sequence of events occurring throughout a typical cell’s life. In eukaryotic cells, the somatic cell cycle has two ...

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    17.2 : Interphase

    17.2 : Interphase

    The cell cycle occurs over approximately 24 hours (in a typical human cell) and in two distinct stages: interphase, which includes three phases of the ...

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    17.3 : The Cell Cycle Control System02:11

    17.3 : The Cell Cycle Control System

    The cell cycle is an organized set of events that leads the cell to divide into two daughter cells, each containing chromosomes identical to the parent ...

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    17.4 : Positive Regulator Molecules02:39

    17.4 : Positive Regulator Molecules

    Mitotic cell division results in daughter cells that exactly resemble the parent cell. However, errors in the DNA replication or distribution of genetic ...

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    17.5 : Inhibition of Cdk Activity02:34

    17.5 : Inhibition of Cdk Activity

    The orderly progression of the cell cycle depends on the activation of Cdk protein by binding to its cyclin partner. However, the cell cycle must be ...

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    17.6 : S-Cdk Initiates DNA Replication02:38

    17.6 : S-Cdk Initiates DNA Replication

    The cell cycle is a series of events leading to DNA duplication followed by the division of cell content to form two daughter cells. The cell cycle ...

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    17.7 : M-Cdk Drives Transition Into Mitosis02:15

    17.7 : M-Cdk Drives Transition Into Mitosis

    Checkpoints throughout the cell cycle serve as safeguards and gatekeepers, allowing the cell cycle to progress in favorable conditions and slow or halt it ...

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    17.8 : Mitogens and the Cell Cycle02:38

    17.8 : Mitogens and the Cell Cycle

    Mitogens and their receptors play a crucial role in controlling the progression of the cell cycle. However, the loss of mitogenic control over cell ...

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    17.9 : Replicative Cell Senescence02:15

    17.9 : Replicative Cell Senescence

    Replicative cell senescence is a property of cells that allows them to divide a finite number of times throughout the organism's lifespan while ...

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    17.10 : Abnormal Proliferation02:23

    17.10 : Abnormal Proliferation

    Under normal conditions, most adult cells remain in a non-proliferative state unless stimulated by internal or external factors to replace lost cells. ...

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    17.11 : Cells Coordinate Growth and Proliferation02:36

    17.11 : Cells Coordinate Growth and Proliferation

    Cell size is a significant factor impacting cellular design, function, and fitness. There exists some internal coordination by which cells double their ...

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