Q:

What is the longest part of the cell cycle?

A:

Quick Answer

The longest part of the cell cycle is interphase. During interphase, the cell undergoes a growth phase in which it acquires energy to copy DNA. Once the DNA is copied, the cell undergoes another growth stage and acquires energy to complete cell division.

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Full Answer

Approximately 90 percent of a cell's life is spent in interphase. The first growth phase of interphase is called G1 phase. It is immediately followed by S phase, the stage in which DNA is copied. G2 phase is the second growth phase.

Once a cell has grown to a sufficient size and has the required amount of energy, it begins to divide. The contents of the nucleus are the first to separate in a process called mitosis. Mitosis consists of four phases. During prophase, chromosomes form, and the nuclear envelope dissolves. The chromosomes move to the middle of the cell during metaphase. Copied chromosomes separate during anaphase, which is followed by telophase. In telophase, the nuclear envelopes around the two groups of chromosomes re-form.

The final stage of the cell cycle is called cytokinesis. During cytokinesis, the cell divides its cytoplasm and other organelles. Once cytokinesis is complete, two new daughter cells are formed.

Human cell division usually takes eight to 24 hours.

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Related Questions

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    Which event occurs during interphase?

    A:

    During interphase, which is the nondividing phase in a cell cycle, the growth and metabolic activities of a cell primarily occur, according to The Collin County Community College District. Interphase makes up around 90 percent of the cell cycle, and it is a period of intense biochemical activity wherein the cell grows and copies its chromosomes to prepare for cell division.

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    During which stage of the cell cycle does DNA replication occur?

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    During the cell cycle, DNA replication occurs during the S-phase portion of the interphase. Interphase occurs between cell divisions and is a necessary precursor step for cell division.

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    What occurs during the interphase stage of cell division?

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    During interphase, the cell is preparing to divide and is actively synthesizing the required components. Originally and inaccurately referred to as "the resting stage," the interphase is actually a period in which a considerable degree of activity is taking place on the sub-cellular and molecular level. Prior to division, the cell must first manufacture the required materials and duplicate its chromosomes, which are activities that represent the primary function of the interphase stage.

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    What are the three stages of the cell cycle of a eukaryotic cell?

    A:

    According to the National Institute of Health, or NIH, there are actually four stages of the cell cycle of a eukaryotic cell: M phase, G1 phase, S phase and G2 phase. Not all eukaryotic cells complete the cycle at the same pace, meaning the type of cell dictates the amount of time.

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