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Phases of the cell cycle Transitional Reasoning Practice

Biology · Cell Communication & the Cell Cycle · Biology · Cell Cycle & Cell Division

1 Biology practice questions on Phases of the cell cycle. Questions that build towards applied reasoning.

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  1. 1.

    In an investigation of the mammalian cell cycle, researchers quantify cellular DNA content in an asynchronous population of somatic cells using a fluorescent dye that binds proportionally to double-stranded DNA. Their analysis identifies a large group of diploid cells possessing a baseline DNA content of 2C, a smaller group with 4C, and a distinct intermediate group whose DNA content ranges continuously between 2C and 4C. Which process is actively taking place within the cells belonging to this intermediate group?

    • A) Separation of sister chromatids toward opposite poles of the spindle apparatus
    • B) Semiconservative synthesis of new nuclear DNA strands along unwound template strands
    • C) Rapid synthesis of tubulin proteins and organelle duplication in preparation for mitosis
    • D) Decondensation of chromosomes and reformation of the nuclear envelope around daughter nuclei

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