Crossword clues for stroma
The Collaborative International Dictionary
Stroma \Stro"ma\, n.; pl. Stromata. [L., a bed covering, Gr. ? a couch or bed.]
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(Anat.)
The connective tissue or supporting framework of an organ; as, the stroma of the kidney.
The spongy, colorless framework of a red blood corpuscle or other cell.
(Bot.) A layer or mass of cellular tissue, especially that part of the thallus of certain fungi which incloses the perithecia.
Douglas Harper's Etymology Dictionary
1835 in anatomy, plural stromae, Modern Latin, from Latin stroma "bed covering," from Greek stroma "coverlet, covering, mattress, anything spread out for lying or sitting on" (see structure (n.)).
Wiktionary
n. (context anatomy English) the tissue structure of an organ, etc., that serves to support it
WordNet
n. the dense colorless framework of a chloroplast
the supporting tissue of an organ (as opposed to parenchyma)
[also: stromata (pl)]
Wikipedia
Stroma may refer to:
In animal tissue, stroma (from Greek στρῶμα, meaning “layer, bed, bed covering”) is the part of a tissue or organ that has a connective and structural role. It consists of all the parts which do not conduct the specific functions of the organ, for example, connective tissue, blood vessels, nerves, ducts, etc. The other part is the parenchyma, which is the cells that perform the function of the tissue or organ. There are multiple ways of classifying tissues: one way of classifying tissues is based on their functions and another is based on their cellular components. Stromal tissue falls into the class that functions in contributing to the body’s support and movement. The cells that stroma tissues are composed of serve as a matrix in which the other cells are embedded. Stroma is made of various types of stromal cells.
Examples of stroma include:
- stroma of iris
- stroma of cornea
- stroma of ovary
- stroma of thyroid gland
- stroma of thymus
- stroma of bone marrow
- lymph node stromal cell
Stroma, in botany, refers to the colorless fluid surrounding the grana within the chloroplast.
Within the stroma are grana, stacks of thylakoids, the sub-organelles, the daughter cells, where photosynthesis is commenced before the chemical changes are completed in the stroma.
Photosynthesis occurs in two stages. In the first stage, light-dependent reactions capture the energy of light and use it to make the energy-storage molecules ATP and NADPH. During the second stage, the light-independent reactions use these products to capture and reduce carbon dioxide.
The series of biochemical redox reactions which take place in the stroma are collectively called the Calvin cycle or light-independent reactions. There are three phases: carbon fixation, reduction reactions, and ribulose 1,5-bisphosphate (RuBP) regeneration.
The stroma is also the location of chloroplast DNA and chloroplast ribosomes, and thus also the location of molecular processes including chloroplast DNA replication, and transcription/ translation of some chloroplast proteins.
Usage examples of "stroma".
They barged it down the Stroma River and along the coast, then landed it in the harbor.
Thurso--Fog--Wrecked in Pentland Firth--Escaped to Stroma Island--Subsequently to Wick.
Providentially those skilled men did avoid it, and soon we stood upon the rocky shores of Stroma, which personally I thought a very pleasant place.
The Primorye had altered round to port, rounding Stroma, and for a while she was blanked off from sight by the ships ahead.
The stroma, which forms only about one tenth of the solid matter of the corpuscles, serves as a contrivance for holding the hemoglobin.
Point are the origin of the Merry Men of Mey, while off the island of Stroma occurs the whirlpool of the Swalchie, and off the Orcadian Swona is the vortex of the Wells of Swona.
Nor has the microscope discovered in the demented any exudation or addition to the stroma of the brain, or any change in size, shape, or proportional number of its cells.
Point are the origin of the Merry Men of Mey, while off the island of Stroma occurs the whirlpool of the Swalchie, and off the Orcadian Swona is the vortex of the Wells of Swona.
That these represented the planets, we are assured by Clemens of Alexandria, in his Stromata, and by Philo Judaeus.
Clement of Alexandria, in his Stromata, writes it Bedou, as it is pronounced also by the Chingulais.