Cells: Single-Celled and Multicellular OrganismsWagner, Angela
Their central role in reproductive, embryonic, and post-embryonic processes, combined with their wide phylogenetic distribution in both the plant and animal kingdoms intimates that the emergence of stem cells may have been a prerequisite in the evolution of multicellular organisms. We present an ...
1.1 U5 Specialized tissues can develop by cell differentiation in multicellular organisms. 1.1 U6 Differentiation involves the expressions of some genes and not others in a cell’s genome. 细胞分化指的是细胞的基因组中某些基因的选择性表达导致细胞类型的不同。一个人肌肉细胞和肝脏细胞的细胞核中基因都...
One of the main goals of contemporary biology is to understand the development of multicellular organisms. This is a very complex process that involves cell division, cell death, cell differentiation and cell movement, which are all highly regulated in space and time. The co-ordination of these ...
In communities of single-celled and multicellular organisms, cell–cell communication enables cells to organize in space, distribute tasks, and to coordinate collective responses. Synthetic biologists have engineered living, communicating cells to form cellular patterns1,2 and synchronize gene expression3 ...
is a plant, an animal or fungi. Some organisms (known as simple organisms) are composed of only one cell; others are composed of many more. These are multicellular organisms, human beings being one example. The first cells to ever be studied closely were those belonging to plants and ...
Quantitative micromechanical characterization of single cells and multicellular tissues or organisms is of fundamental importance to the study of cellular growth, morphogenesis, and cell-cell interactions. However, due to limited manipulation capabilities at the microscale, systems used for mechanical character...
61 Adhesion of epithelial cells to one another is an important process for the differentiation of multicellular organisms, and cell-cell interactions are known to be essential for proper liver function.61, 62, 63, 64, 65, 66 Interactions between cells are necessary to maintain proper parenchymal ...
but because plants and animals very likely evolved from unicellular to multicellular organisms separately (Meyerowitz 2002). Therefore, stem cells probably evolved independently in both kingdoms as an advantageous solution to the problem of balancing the need to grow with the need to produce specialized...
Most cells in the body are polarized, showing some level of shape and functional asymmetry, such as apico–basal or front–back polarity. Tissues are formed from the coordinated integration of individual cells into a multicellular structure, such as an epithelial tube. Polarity is established and ...