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In sulfur photosynthetic bacteria what is the molecule that donates hydrogen for photosynthesis?
In sulfur photosynthetic bacteria the substance that donates hydrogen is hydrogen sulfide (H2S) and not water. Thus there is no liberation of molecular oxygen but there is production of molecular sulfur (S2). (Oxygen and sulfur have similar number of valence electrons.)
Q. What are the major biological processes in which calcium participates? Calcium is present in approximately all cells and has various functions. Calcium has an significant ro
Explain about the Multiple Sclerosis This is a disease characterised by the loss of myelin, largely in motor tracts but also in sensory tracts. The loss of myelin is not unifor
Q How are the concepts of chromosome, chromatids and chromatin related? In which phase of the cell cycle does the DNA duplicate? Chromatin is a set of filamentous the DNA molec
FLUI D MOSAIC MODEL Proposed by Nicholson and Singer (1972) Proteins and lipids are arranged in a mosaic fashion. Lipids and proteins are in a semi fluid structure.
Relate Mitochondria organelles with eukaryotic cells Mitochondria are highly specialised organelles in eukaryotic cells. These perform the energy transducing process, and are o
What are the soil-forming factors There are many degrees or variations of soil-forming factors, and the potential for creating different kinds of soil is enormous. However, whe
Importance of water in the body Water is the most essential constituent of life. Life cannot exist without water. About 90% of water is present in protoplasm Water
Explain Measurement of Cell Mass - Microbial Estimation? You may recall reading earlier that filamentous bacteria and moulds cannot be counted satisfactorily by employing plate
what is the main excretory organ of a lizard
Compared to amphibians what is an example of evolutionary novelty present in beings of the class Reptilia against the loss of water through the skin? The reptile skin is kerat
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