Interphase

src: i.ytimg.com

Interphase is the phase of the cell cycle in which a typical cell spends most of its life. During this phase, the cells copy the DNA in preparation for mitosis. Interphase is the phase of 'everyday life' or cellular metabolic phase, in which cells acquire nutrients and metabolize them, grow, read their DNA, and perform other "normal" cell functions. The majority of eukaryotic cells spend most of their time in interphase. This phase was once called the resting phase. However, the interphase does not represent cells that are just resting; on the contrary, the cell is alive, and prepares for cell division later, so that its name is changed. A common misconception is that interphase is the first stage of mitosis. However, since mitosis is the division of the nucleus, prophase is actually the first stage.

In the interphase, the cell becomes ready for mitosis or meiosis. Somatic cells, or normal body diploid cells, through mitosis to reproduce themselves through cell division, whereas diploid germ cells (ie primary spermatocytes and primary oocytes) through meiosis to create haploid gametes (ie, sperm and ovum) for sexual reproduction purposes. Chromosomes copied.

Video Interphase

Tahapan interphase

There are three stages of mobile interphase, with each phase ending when a mobile check checks the accuracy of the completion stage before proceeding to the next stage. The interphase stage is:

• G ₁ (Gap 1), where cells grow and function normally. During this time, large amounts of protein synthesis occur and cells grow (about twice their original size) - more organelles are produced and cytoplasmic volume increases. If the cell is not subdivided, it will go to G ₀ .
• Synthesis (S), in which cells duplicate their DNA (via semiconservative replication).
• G ₂ (Pass 2), where the cell continues its growth in preparation for sharing. Mitochondrial and cell divisions continue to grow until mitosis begins. In plants, chloroplasts also divide during G2.
• In addition, some cells that do not divide often or ever enter a stage called G ₀ (Gap zero), which is a separate stage of interphase or extension G ₁ .

The length of time spent in the interphase and in each stage of the interphase varies and depends on the type of cell and species of organism it possesses. Most adult mammals spend about 20 hours in interphase; this accounts for about 90% of the total time involved in cell division. Interphase includes the phases of G1, S, and G2. Mitosis and cytokinesis, however, are separate from the interphase.

Maps Interphase

Interphase in mobile process sequence

Interphase and cell cycle

When G ₂ is complete, the cell enters a relatively short period of nuclear and cellular division, composed of mitosis and cytokinesis, respectively. After successful completion of mitosis and cytokinesis, the two resulting child cells go back into G ₁ of the interphase.

In the cell cycle, the interphase is preceded by telophase and M. phase cytokinesis. In alternative mode, the interphase is occasionally disturbed by the G ₀ phase, which, in some circumstances, may end and is followed by the remaining interphase stages. After successful completion of the checkpoint G ₂ , the final checkpoint in the interphase, the cell will progress to the prophase, or to the plant toward the preprophase, which is the first stage of mitosis.

Phase G ₀ is seen as an extended G phase ₁ where the cell does not divide or prepare to divide and or as a different silent stage that occurs outside the cell cycle.

Interphase and other mobile processes

In the gamete production interfase is replaced by meiosis. In programmed cell death, interphase is followed or replaced by apoptosis.

src: i.ytimg.com

See also

• Prophecy
• Prometaphase
• Metaphase
• Anafase
• Telophase

src: www.originalstylophone.com

References

Source of the article : Wikipedia