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bundle in Biological Definition

C4 carbon fixation

... mesophyll of the leaf , specifically in the mesophyll cells and the bundle sheath cells. The chemical equation is: PEP carboxylase + PEP + CO 2 ... that gives up its CO 2 to the Calvin cycle after being shipped off to bundle sheath cells surrounding a nearby vein . After losing the CO 2 , it ...

Flagellum

... of which rotates independently, the archaeal flagellum is composed of a bundle of many filaments that rotate as a single assembly. Bacterial flagella ... the cell and wiggle to produce propulsion. A eukaryotic flagellum is a bundle of nine fused pairs of microtubules doublets surrounding two central ...

Actin

... walk towards their filament's plus end, sliding the actin filaments over each other. This results in the shorterning, or contraction, of the actin bundle (but not the filament). This mechanism is responsible for muscle contraction and cytokinesis , the division of one cell into two. Networks ...

Crassulacean acid metabolism

... into PEP and then be recycled to fix more carbon. In some ways, CAM resembles C 4 metabolism, except that CAM plants contain no bundle sheaths around their veins, and C 4 metabolism is continuous, while CAM only occurs at night. ...

Crassulacean acid metabolism

... into PEP and then be recycled to fix more carbon. In some ways, CAM resembles C 4 metabolism, except that CAM plants contain no bundle sheaths around their veins, and C 4 metabolism is continuous, while CAM only occurs at night. ...

Centrosome

... as diplosomes). During the prophase of mitosis , the centrosomes migrate to opposite poles of the cell. Between them is formed the spindle , a bundle of microtubules that will function later as the foundation for cell division. Interestingly, the pair of centrioles that make up each controsome ...

Eukaryote

... that are variously involved in movement, feeding, and sensation. These are entirely distinct from prokaryotic flagella. They are supported by a bundle of microtubules arising from a basal body, also called a kinetosome or centriole, characteristically arranged as nine doublets surrounding two ...

Actin

... walk towards their filament's plus end, sliding the actin filaments over each other. This results in the shorterning, or contraction, of the actin bundle (but not the filament). This mechanism is responsible for muscle contraction and cytokinesis , the division of one cell into two. Networks ...

Mitotic spindle

... The mitotic spindle is a structure of the eukaryotic cytoskeleton involved in mitosis and meiosis . It consists of a bundle of microtubules joined at the ends but spread out in the middle, vaguely resembling an American football in shape. The spindle is aligned ...

Nervous system

... a more conventional nervous system, but lack a brain. Annelid worms and tunicates have a primitive brain called a ganglionic mass, which is a bundle of several nerves. Based in part on commonalities in embryonic development among all chordates , the tunicate brain is believed to resemble the ...

Neural plate

... The neural plate is thick and flat bundle of ectoderm which develops in the embryo into the nervous system . In the development sequence, the neural plate forms the neural tube which ...
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