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相关概念视频

Distribution of Cytoplasmic Content02:33

Distribution of Cytoplasmic Content

4.1K
Cytokinesis segregates a cell’s chromosomes and organelles into its daughter cells. Organelles divide and grow prior to cell division but cannot be synthesized de novo; therefore, cells must receive at least one copy of each organelle to survive. Currently, many of the details of how the organelles are distributed are not yet fully elucidated.
Distribution of cytoplasmic determinants
The cytoplasm contains various organelles, as well as salts, proteins, and water. The distribution of...
4.1K
Determining the Plane of Cell Division02:13

Determining the Plane of Cell Division

3.3K
Positioning the cell division plane is a critical step during development and cell differentiation, particularly during mitosis when the plane is essential for determining the size of the two daughter cells. The cell division plane is perpendicular to the plane of chromosome segregation, but different types of organisms have different cell division mechanisms to suit their morphology and function. 
Animal cells
In animal cells, the cleavage furrow forms along the plane of cell division...
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Binary Fission01:20

Binary Fission

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Fission is the division of a single entity into two or more parts, which regenerate into separate entities that resemble the original. Organisms in the Archaea and Bacteria domains reproduce using binary fission, in which a parent cell splits into two parts that can each grow to the size of the original parent cell. This asexual method of reproduction produces cells that are all genetically identical.
55.5K
The Phragmoplast01:59

The Phragmoplast

5.1K
Cell division is essential for organismal growth and development. In animal cells, the central spindle and its associated proteins form the midbody, a structure that has an essential role in cytokinesis. In plants, the central spindle, along with the microtubules, actin, and other cell components, matures into the phragmoplast, which is necessary for cytokinesis. Unlike the stationary midbody, the phragmoplast expands centrifugally, eventually leading to the formation of the new cell wall.
The...
5.1K
Mitosis and Cytokinesis01:35

Mitosis and Cytokinesis

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In eukaryotes, the cell division cycle is divided into distinct, coordinated cellular processes that include cell growth, DNA replication/chromosome duplication, chromosome distribution to daughter cells, and finally, cell division. The cell cycle is tightly regulated by its regulatory systems as well as extracellular signals that affect cell proliferation.
The processes of the cell cycle occur over approximately 24 hours (in typical human cells) and in two major distinguishable stages. The...
6.2K
Centrioles and Centrosomes01:13

Centrioles and Centrosomes

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Most animal cells comprise a pair of centrioles together called a centrosome. The cell duplicates its centrosome and contains two centrosomes side-by-side, which begin to move apart during the prophase. As the centrosomes migrate to two different sides of the cell, microtubules start extending from each centrosome toward the other end. The mitotic spindle is composed of the centrosomes and their emerging microtubules.
Near the end of the prophase, also called late prophase or...
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相关实验视频

Updated: Jun 27, 2025

Visualizing Neuroblast Cytokinesis During C. elegans Embryogenesis
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Visualizing Neuroblast Cytokinesis During C. elegans Embryogenesis

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进行非对称分裂的原细胞模型.

Marco Villani1,2, Elena Alboresi1, Roberto Serra1,2,3

  • 1Department of Physics, Informatics and Mathematics, Modena and Reggio Emilia University, 41121 Modena, Italy.

Entropy (Basel, Switzerland)
|April 26, 2024
PubMed
概括

即使在不对称的分裂中,持续的原细胞生长也是可能的. 同质增长的新概念允许种群繁殖,与对称划分模型中的真实同步不同.

科学领域:

  • 生命起源研究研究生命的起源.
  • 理论生物学的理论生物学.
  • 生物物理学的生物物理.

背景情况:

  • 原细胞生长模型探讨了持续人口增长的条件.
  • 对称的分裂模型实现了基因重复和细胞裂变之间的同步.
  • 在对称模型中的同步确保了持续的原细胞繁殖.

研究的目的:

  • 在不对称分裂过程中研究原细胞群持续增长的条件.
  • 将结果与以前关于对称除法模型的研究进行比较.
  • 介绍和分析原细胞繁殖中同质生长的概念.

主要方法:

  • 对原细胞生长的表面反应模型的分析.
  • 检查内部反应模型 (IRM).
  • 关于对称和不对称分割的动力定律的比较.

主要成果:

  • 不对称的划分阻止了真正的同步,因为大小依赖的重复时间.
  • 均质生长被引入作为持续原细胞繁殖的机制.
  • 表面反应模型在导致对称模型同步的条件下表现出均的增长.
  • 内部反应模型也表明同质增长,尽管需要进一步定义.
关键词:
不对称复制的复制模型 模型 模型 模型人口的人口人口人口.原细胞原细胞是什么?持续的繁殖 持续的繁殖时间同步同步同步同步.

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Assembly of Cell Mimicking Supported and Suspended Lipid Bilayer Models for the Study of Molecular Interactions
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Assembly of Cell Mimicking Supported and Suspended Lipid Bilayer Models for the Study of Molecular Interactions

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In Vitro Reconstitution of Self-Organizing Protein Patterns on Supported Lipid Bilayers
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In Vitro Reconstitution of Self-Organizing Protein Patterns on Supported Lipid Bilayers

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相关实验视频

Last Updated: Jun 27, 2025

Visualizing Neuroblast Cytokinesis During C. elegans Embryogenesis
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Visualizing Neuroblast Cytokinesis During C. elegans Embryogenesis

Published on: March 12, 2014

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Assembly of Cell Mimicking Supported and Suspended Lipid Bilayer Models for the Study of Molecular Interactions
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Assembly of Cell Mimicking Supported and Suspended Lipid Bilayer Models for the Study of Molecular Interactions

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In Vitro Reconstitution of Self-Organizing Protein Patterns on Supported Lipid Bilayers
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In Vitro Reconstitution of Self-Organizing Protein Patterns on Supported Lipid Bilayers

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结论:

  • 均质生长在不对称分裂场景中为持续的原细胞种群繁殖提供了可行的途径.
  • 这些发现扩大了我们对原细胞生存能力的理解,超出了同步对称分裂的范围.
  • 需要进一步研究内部反应模型中同质增长的确切含义.