Where is the centrosome of animal cell mitosis
Publish: 2021-04-21 02:20:42
1. It is generally believed that the decomposition of stellar rays and spindles from centrosomes occurs at the end of cell division. Interphase exists in the form of chromatin. After prophase, chromatin helix shortens and thickens, which is called chromosome.
2. When does centrosome replicate in animal cell mitosis
centrosome replication and the trigger of centrosome replication are semi reserved replication. In each cell cycle, centrosome replicates once. At the end of mitosis, each progeny cell inherits one centrosome, and before the next mitosis, it contains two centrosomes, In higher animal cells, centrosome replication consists of four stages: (1) centromere division; (2) centromere division; (3) centrosome division; (3) centrosome division; (4) centrosome division; (4) centrosome division; (4) centrosome division; (4) centrosome division; (4) centrosome division; (4) centrosome division; (4) centrosome division; (4) centrosome division; (4) centrosome division; (4; (2) centriole replication; (3) centrosome division; (4) centrosome separation in progeny.
centrosome division occurs in late G1, which is a sign of centrosome replication. Centrosome replication begins in early s, or at the time of slight division of two perpendicular centrosomes in S phase. Protocentrosome prolongs in S phase and G2 phase, and grows and matures in mitosis phase, Centrosome division is related to the activity of Nek2, which is a cell cycle regulating kinase and helps cells enter mitosis. Centrosome division is related to the phosphorylation of EF hand protein in G2 / prophase. The centrosome of progeny is separated by the activity of motor protein mainly composed of microtubules
centrosome replication and the trigger of centrosome replication are semi reserved replication. In each cell cycle, centrosome replicates once. At the end of mitosis, each progeny cell inherits one centrosome, and before the next mitosis, it contains two centrosomes, In higher animal cells, centrosome replication consists of four stages: (1) centromere division; (2) centromere division; (3) centrosome division; (3) centrosome division; (4) centrosome division; (4) centrosome division; (4) centrosome division; (4) centrosome division; (4) centrosome division; (4) centrosome division; (4) centrosome division; (4) centrosome division; (4) centrosome division; (4; (2) centriole replication; (3) centrosome division; (4) centrosome separation in progeny.
centrosome division occurs in late G1, which is a sign of centrosome replication. Centrosome replication begins in early s, or at the time of slight division of two perpendicular centrosomes in S phase. Protocentrosome prolongs in S phase and G2 phase, and grows and matures in mitosis phase, Centrosome division is related to the activity of Nek2, which is a cell cycle regulating kinase and helps cells enter mitosis. Centrosome division is related to the phosphorylation of EF hand protein in G2 / prophase. The centrosome of progeny is separated by the activity of motor protein mainly composed of microtubules
3. Moving to the poles
4. In the early stage of cell division, the paired centromere reproces itself into two pairs, then moves to the poles of the cell, which are linked by a gelatin spindle. At metaphase, the paired centrioles (centromeres) move to the cell poles, and the spindles form spindles. At the late and late stage of cell division, the spindle and spindle became indistinct graally, and the centrosome at the two poles of the cell was also distributed to the two daughter cells with cell division
the structure of centromere also changed ring cell division. First, some round corpuscles grow around the centriole, and each round corpuscle has a short rod connected with each triad microtubule on the centriole. In fact, there are nine pairs of round spindles on each centromere. The spindles radiate around the centromere, and the radial spindles form the stars around the centromere
therefore, centriole (centrosome) participates in cell division and is the center of internal movement ring cell division. That is to say, centrioles are related to cell division, not just mitosis. However, the centrosome was found in the process of mitosis, and more research was done in the process of mitosis.
the structure of centromere also changed ring cell division. First, some round corpuscles grow around the centriole, and each round corpuscle has a short rod connected with each triad microtubule on the centriole. In fact, there are nine pairs of round spindles on each centromere. The spindles radiate around the centromere, and the radial spindles form the stars around the centromere
therefore, centriole (centrosome) participates in cell division and is the center of internal movement ring cell division. That is to say, centrioles are related to cell division, not just mitosis. However, the centrosome was found in the process of mitosis, and more research was done in the process of mitosis.
5. The centrosome is usually located near the nucleus and in the center of Golgi region. Before cell division, the centrosome completes its own replication into two, and then moves to the two poles of the cell respectively; At metaphase, the two centrosomes moved to the cell poles respectively; At the late and late stage of cell division, the cells were divided into two daughter cells. Moreover, the nucleus is the center of most animal cells, and the centrosome is only located in the center of Golgi region on one side of the nucleus
before the cell division stage, the paired centromere reproced itself into two pairs, then moved to the poles of the cell, and the spindle was connected by gelation. At metaphase, the paired centrioles (centromeres) move to the cell poles, and the spindles form spindles. At the late and late stage of cell division, the spindle and spindle became indistinct graally, and the centrosome at the two poles of the cell was also distributed to the two daughter cells with cell division.
before the cell division stage, the paired centromere reproced itself into two pairs, then moved to the poles of the cell, and the spindle was connected by gelation. At metaphase, the paired centrioles (centromeres) move to the cell poles, and the spindles form spindles. At the late and late stage of cell division, the spindle and spindle became indistinct graally, and the centrosome at the two poles of the cell was also distributed to the two daughter cells with cell division.
6. The centrosome moves to the two poles of the cell and draws the stellar rays
plant cells are called spindles, and animal cells are called stellar rays
plant cells are called spindles, and animal cells are called stellar rays
7. The centrosome can be seen in the interphase of animal cell mitosis, because the centrosome is an organelle, but the spindle can not be seen, because the spindle appears in the early stage of cell mitosis
8. The centrosome can be seen in the interphase of animal cell mitosis, because the centrosome is a organelle, and the spindle can not be seen, because the spindle appears in the early stage of cell mitosis.
9. Answer: D
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