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The Crucible is a 1961 English language opera written by Robert Ward based on the 1953 play The Crucible by Arthur Miller. It won both the 1962 Pulitzer Prize for Music and the New York Music Critics Circle Citation. The libretto was lightly adapted from Miller's text by Bernard Stambler.
5 cluster (including two chloride ions), one non heme Fe 2+ and two putative Ca 2+ ions per monomer. [4] There are several crystal structures of photosystem II. [5] The PDB accession codes for this protein are 3WU2, 3BZ1, 3BZ2 (3BZ1 and 3BZ2 are monomeric structures of the Photosystem II dimer), [4] 2AXT, 1S5L, 1W5C, 1ILX, 1FE1, 1IZL.
Cyanobacteria photosystem II, dimer, PDB 2AXT. Photoinhibition occurs in all organisms capable of oxygenic photosynthesis, from vascular plants to cyanobacteria. [14] [15] In both plants and cyanobacteria, blue light causes photoinhibition more efficiently than other wavelengths of visible light, and all wavelengths of ultraviolet light are more efficient than wavelengths of visible light. [14]
York Notes are a series of English literature study guides sold in the United Kingdom and in approximately 100 countries worldwide. They are sold as revision material for GCSE and A-level exams particularly as literary guides to introduce students to sophisticated analysis and perspectives of the specific title.
Light-dependent reactions of photosynthesis at the thylakoid membrane. Light-dependent reactions are certain photochemical reactions involved in photosynthesis, the main process by which plants acquire energy. There are two light dependent reactions: the first occurs at photosystem II (PSII) and the second occurs at photosystem I (PSI).
The underlying force driving these reactions is the Gibbs free energy of the reactants relative to the products. If donor and acceptor (the reactants) are of higher free energy than the reaction products, the electron transfer may occur spontaneously. The Gibbs free energy is the energy available ("free") to do work.
In biology, a light-harvesting complex or LHC is an aggregate consisting of proteins bound with chromophores (chlorophylls and carotenoids) that play a key role in photosynthesis. LHCs are arrayed around photosynthetic reaction centers in both plants and photosynthetic bacteria and collect more of the incoming light than would be captured by ...
By studying purple sulphur bacteria and green sulphur bacteria he was the first scientist to demonstrate, in 1931, that photosynthesis is a light-dependent redox reaction [2] in which hydrogen from an oxidizable compound reduces carbon dioxide to cellular materials. Expressed as: 2 H 2 A + CO 2 → 2A + CH 2 O + H 2 O. where A is the electron ...