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Each cell in the respiratory epithelium has around 200 motile cilia. [12] In the reproductive tract, smooth muscle contractions help the beating of the cilia in moving the egg cell from the ovary to the uterus. [13] [15] In the ventricles of the brain ciliated ependymal cells circulate the cerebrospinal fluid.
The cell then divides in two, and each new cell obtains a copy of the micronucleus and the macronucleus. Ciliate undergoing the last processes of binary fission Division of ciliate Colpidium Typically, the cell is divided transversally, with the anterior half of the ciliate (the proter ) forming one new organism, and the posterior half (the ...
β-tubulin in Tetrahymena.. As a ciliated protozoan, Tetrahymena thermophila exhibits nuclear dimorphism: two types of cell nuclei.They have a bigger, non-germline macronucleus and a small, germline micronucleus in each cell at the same time and these two carry out different functions with distinct cytological and biological properties.
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An organelle present in plant cells which contains chlorophyll. chlorosis An abnormal lack or paleness of color in a normally green organ. cilia. sing. cilium; adj. ciliate. Very small hairs or hair-like protrusions more or less confined to the margin s of an organ, as with eyelashes; in motile cells, minute, hair-like protrusions which aid ...
For example, while basal cells in both the esophagus and the stomach function as multipotent progenitor cells, they are fundamentally different because the esophageal basal cells exist as a part of a stratified squamous epithelium, whereas the gastric basal cells exist as a part of a simple columnar epithelium. Functionally, this means that ...
P. caudatum feed on bacteria and small eukaryotic cells, such as yeast and flagellate algae. [2] the accumulated food particles, at the posterior end of the cytopharynx, are directed by the long cilia into the rounded, ball-like mass in the endoplasm called food vacuole. The food vacuoles are circulated by the streaming movement of the ...
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