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The name Melvin Calvin is associated with
Melvin Calvin is known for his discovery of the Calvin cycle, which is the series of biochemical redox reactions that take place in the stroma of chloroplasts in photosynthetic organisms. This cycle is responsible for carbon fixation during photosynthesis.
Who gave chemical compositions of chlorophyll and carotenoids ?
Richard Willstätter and Arthur Stoll (often misspelled as Stahi) were awarded the Nobel Prize for their work on the chemical composition of chlorophyll and other plant pigments such as carotenoids.
The non-polar part of chlorophyll is
The non-polar part of chlorophyll is the phytol tail, which is a long hydrocarbon chain that helps anchor the chlorophyll molecule to the hydrophobic regions of the thylakoid membrane within the chloroplast.
The approximate dimension of chlorophyll porphyrinring is.
Photosynthesis is most active in
Intensity of light increase 20 times, rate of photosynthesis will
If the intensity of light increases 20 times, the rate of photosynthesis will increase until feedback inhibition occurs. Photosynthesis rates do not increase indefinitely with light intensity; they eventually reach a plateau due to limitations such as enzyme saturation and other regulatory mechanisms within the plant cells.
The most efficient convertor of sunlight is
Sugarcane is known to be one of the most efficient converters of sunlight into chemical energy through the process of photosynthesis. This is largely due to its C4 photosynthetic pathway, which is more efficient than the C3 pathway found in many other plants. C4 plants like sugarcane can fix carbon dioxide more effectively under high temperature and light conditions, leading to higher rates of photosynthesis and biomass production.
Cyclic photophosphorylation is confined to
Cyclic photophosphorylation is confined to Photosystem I. In this process, the electrons are cycled back to the Photosystem I reaction center rather than being passed on to NADP+. This cycle generates ATP without the production of NADPH or oxygen. It is an essential process to maintain the right balance of ATP and NADPH in the chloroplasts.
For synthesis of one glucose molecule, the number of ATP required are
For the synthesis of one glucose molecule, 18 ATP molecules are required in the C3 cycle (Calvin cycle) and 30 ATP molecules are required in the C4 cycle. In the C3 cycle, 6 turns of the cycle are needed to fix enough carbon for one glucose molecule, consuming 18 ATP and 12 NADPH. In the C4 cycle, additional ATP is used in the process of carbon fixation and transport, leading to a higher overall ATP requirement.
For chlorophyll formation most important are
For chlorophyll formation, Fe++ (iron) and Mg++ (magnesium) are essential. Iron is necessary for the synthesis of chlorophyll, while magnesium is a central atom in the chlorophyll molecule. Therefore, the correct answer is Fe++ and Mg++.
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