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  1. Photosynthesis ( / ˌfoʊtəˈsɪnθəsɪs / FOH-tə-SINTH-ə-sis) [1] is a system of biological processes by which photosynthetic organisms, such as most plants, algae, and cyanobacteria, convert light energy, typically from sunlight, into the chemical energy necessary to fuel their activities.

  2. Pneumono­ultra­micro­scopic­silico­volcano­coniosis is the longest word in the English language. The word can be analysed as follows: This word was invented in the daily meeting from the National Puzzlers' League (N.P.L.) by its president Everett M. Smith. The word featured in the headline for an article published by the New York Herald ...

  3. en.wikipedia.org › wiki › ChlorophyllChlorophyll - Wikipedia

    • History
    • Photosynthesis
    • Chemical Structure
    • Measurement of Chlorophyll Content
    • Biosynthesis
    • Senescence and The Chlorophyll Cycle
    • Distribution
    • Culinary Use
    • Biological Use
    • See Also

    Chlorophyll was first isolated and named by Joseph Bienaimé Caventou and Pierre Joseph Pelletier in 1817.The presence of magnesium in chlorophyll was discovered in 1906,and was the first detection of that element in living tissue. After initial work done by German chemist Richard Willstätter spanning from 1905 to 1915, the general structure of chlo...

    Chlorophyll is vital for photosynthesis, which allows plants to absorb energy from light. Chlorophyll molecules are arranged in and around photosystems that are embedded in the thylakoid membranes of chloroplasts.In these complexes, chlorophyll serves three functions: 1. The function of the vast majority of chlorophyll (up to several hundred molecu...

    Several chlorophylls are known. All are defined as derivatives of the parent chlorin by the presence of a fifth, ketone-containing ring beyond the four pyrrole-like rings. Most chlorophylls are classified as chlorins, which are reduced relatives of porphyrins (found in hemoglobin). They share a common biosynthetic pathway with porphyrins, including...

    Chlorophylls can be extracted from the protein into organic solvents. In this way, the concentration of chlorophyll within a leaf can be estimated. Methods also exist to separate chlorophyll a and chlorophyll b. In diethyl ether, chlorophyll a has approximate absorbance maxima of 430 nm and 662 nm, while chlorophyll b has approximate maxima of 453 ...

    In some plants, chlorophyll is derived from glutamate and is synthesised along a branched biosynthetic pathway that is shared with heme and siroheme.Chlorophyll synthase is the enzyme that completes the biosynthesis of chlorophyll a: 1. chlorophyllide a + phytyl diphosphate ⇌ {\displaystyle \rightleftharpoons } chlorophyll a+ diphosphate This conve...

    The process of plant senescence involves the degradation of chlorophyll: for example the enzyme chlorophyllase (EC 3.1.1.14) hydrolyses the phytyl sidechain to reverse the reaction in which chlorophylls are biosynthesised from chlorophyllide a or b. Since chlorophyllide a can be converted to chlorophyllide b and the latter can be re-esterified to c...

    The chlorophyll maps show milligrams of chlorophyll per cubic meter of seawater each month. Places where chlorophyll amounts were very low, indicating very low numbers of phytoplankton, are blue. Places where chlorophyll concentrations were high, meaning many phytoplankton were growing, are yellow. The observations come from the Moderate Resolution...

    Synthetic chlorophyll is registered as a food additive colorant, and its E number is E140. Chefs use chlorophyll to color a variety of foods and beverages green, such as pasta and spirits. Absinthe gains its green color naturally from the chlorophyll introduced through the large variety of herbs used in its production. Chlorophyll is not soluble in...

    A 2002 study found that "leaves exposed to strong light contained degraded major antenna proteins, unlike those kept in the dark, which is consistent with studies on the illumination of isolated proteins". This appeared to the authors as support for the hypothesis that "active oxygen species play a role in vivo" in the short-term behaviour of plant...

  4. en.wikipedia.org › wiki › FloaterFloater - Wikipedia

    Floaters are from objects in pockets of liquid within the vitreous humour, the thick fluid or gel that fills the eye, [7] or between the vitreous and the retina. The vitreous humour, or vitreous body, is a jelly-like, transparent substance that fills the majority of the eye. It lies within the vitreous chamber behind the lens, and is one of the ...

  5. Wikipedia is written by volunteer editors and hosted by the Wikimedia Foundation, a non-profit organization that also hosts a range of other volunteer projects : Commons. Free media repository. MediaWiki. Wiki software development. Meta-Wiki. Wikimedia project coordination. Wikibooks. Free textbooks and manuals.

  6. en.wikipedia.org › wiki › ParacetamolParacetamol - Wikipedia

    Paracetamol (acetaminophen[a]) is a non-opioid analgesic and antipyretic agent used to treat fever and mild to moderate pain.[13][14][15] It is a widely used over the counter medication. Common brand names include Tylenol and Panadol. At a standard dose, paracetamol only slightly reduces fever;[14][16][17] it is inferior to ibuprofen in that ...

  7. Fuchsia ( / ˈfjuːʃə /, FEW-shə) is a vivid pinkish-purplish- red color, [1] named after the color of the flower of the fuchsia plant, which was named by a French botanist, Charles Plumier, after the 16th-century German botanist Leonhart Fuchs . The color fuchsia was introduced as the color of a new aniline dye called fuchsine, patented in ...

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