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The terminal cell elongates more than the deeper cells; then the production of a lateral bisector takes place in the inner fluid, which tends to divide the cell into two parts, of which the deeper one remains stationary, while the terminal part elongates again, forms a new inner partition, and so on.
Plant cells possess a hard cell wall made of cellulose, so the enzyme callase is necessary for the degradation of cellulose and the consequent cytomictic channel formation between microsporocytes. An active form of callase was found within spherosomes, but not within the endoplasmic reticulum or golgi apparatus , suggesting it is in fact the ...
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The cell cycle is a vital process by which a single-celled fertilized egg develops into a mature organism, as well as the process by which hair, skin, blood cells, and some internal organs are renewed. After cell division, each of the daughter cells begin the interphase of a new cycle.
The cell is the basic structural and functional unit of all forms of life. Every cell consists of cytoplasm enclosed within a membrane; many cells contain organelles, each with a specific function. The term comes from the Latin word cellula meaning 'small room'. Most cells are only visible under a microscope.
These lipids are used in cell signaling pathways as a form of intracellular communication. [9] There are three ways in which the desmotubule can facilitate the transfer of molecules: allowing them to flow through its internal lumen, letting them diffuse along its membrane, or attaching molecules on its cytoplasmic side and actively transporting ...
Translation is one of the key energy consumers in cells, hence it is strictly regulated. Numerous mechanisms have evolved that control and regulate translation in eukaryotes as well as prokaryotes. Regulation of translation can impact the global rate of protein synthesis which is closely coupled to the metabolic and proliferative state of a cell.
Endocytosis is a cellular process in which substances are brought into the cell. The material to be internalized is surrounded by an area of cell membrane, which then buds off inside the cell to form a vesicle containing the ingested materials. Endocytosis includes pinocytosis (cell drinking) and phagocytosis (cell eating). It is a form of ...