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Life cycle of Acetabularia acetabulum. This alga adheres to the substrate with rhizoids (root-like processes), and these are the only part of the alga present in the winter. . The thallus consists of a single cell, and in the spring a slender stem develops from the holdfast, growing vertically to a length of about 5 cm (2 i
Acetabularia is a genus of green algae in the family Polyphysaceae. [4] Typically found in subtropical waters, Acetabularia is a single-celled organism, but gigantic in size and complex in form, making it an excellent model organism for studying cell biology. [5]
Tip growth occurs in algae (e.g., Acetabularia acetabulum), fungi and plants (e.g. root hairs and pollen tubes). Tip growth is a process that has many similarities in diverse walled cells such as pollen tubes, root hairs, and hyphae.
Valonia ventricosa, also known as bubble algae, sea grape, [2] or sailor's eyeballs, [3] is a species of algae found in oceans throughout the world in tropical and subtropical regions, within the phylum Chlorophyta. It is one of the largest known unicellular organisms. [3] [4] Valonia ventricosa in the Red Sea
Acetabularia crenulata, one of the many species known as mermaid's wineglass, is a form of green alga generally found in shallow tropical seas. It can be found growing in great abundance along stretches of the overseas highway to Key West, Florida bordering on Florida Bay.
The perforate acetabulum is a cup-shaped opening on each side of the pelvic girdle formed where the ischium, ilium, and pubis all meet, and into which the head of the femur inserts. [ 8 ] [ 9 ] The orientation and position of the acetabulum is one of the main morphological traits that caused dinosaurs to walk in an upright posture with their ...
Elysia timida feeds on the alga Acetabularia acetabulum in spring and summer, and on Padina pavonica in autumn. When Elysia timida feeds on the alga instead of digesting the chloroplast within the alga, it is able to make use of the chloroplasts from the algae, storing them in outgrowths of its digestive gland, where they give the sea slug its ...
The transhydrogenase is found in the inner mitochondrial membranes of all vertebrates excluding fish. While it is not found in the yeast Saccharomyces cerevisiae, it is found in algae such as Acetabularia acetabulum, as well as in the cytosolic membrane of many bacteria, including Escherichia coli. [3]