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Light Reaction (involves the sun)
The roots suck up water from the ground, into the chloroplasts. In there, the water is sun-heated and gets split into hydrogen, oxygen and ATP. The oxygen then gets released for us to breath and the hydrogen is put to a different part of the leaf.
Dark Reaction (doesn't involve the sun)
After the hydrogen gets to the other part of the leaf, the CO2 (carbon dioxide), that we breath out, mixes with the hydrogen and gets fused using ATP, making sugar/starch.
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Professor
Blake
RossThe light reaction of photosynthesis occurs in the thylakoid membranes of chloroplasts and requires sunlight to convert light energy into chemical energy (ATP and NADPH). The dark reaction, also known as the Calvin cycle, takes place in the stroma of chloroplasts and uses the ATP and NADPH produced in the light reaction to convert carbon dioxide into glucose.
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What is light reaction and dark reaction?
Light reaction is the first stage of photosynthesis where light energy is absorbed by chlorophyll and converted into chemical energy in the form of ATP and NADPH. Dark reaction (Calvin cycle) is the second stage of photosynthesis where ATP and NADPH produced in the light reaction are used to convert carbon dioxide into glucose.
What type of chemical reaction is photosynthesis?
The two reactions which occur during photosynthesis are light reaction and dark reaction. Light reaction takes place only in the presence of light. Dark reaction can occur with or without light.
Why bromometric titration done in dark conditions?
Bromometric titration is done in dark conditions because the reaction between bromine and the analyte is photo-sensitive. Light can cause the bromine to decompose and give inaccurate results. Performing the titration in the dark ensures the accuracy and reliability of the titration results.
Why iodine kept in dark during titration?
iodine solution should be kept in dark because it is highly photosensetive.light accelerates a side reaction in which iodide ions are converted to iodine..
What are light reactions and dark reactions?
Light reactions are the initial phase of photosynthesis that occur in the presence of light, where light energy is converted into chemical energy in the form of ATP and NADPH. Dark reactions, also known as the Calvin cycle, are the second phase of photosynthesis where ATP and NADPH produced in the light reactions are used to convert carbon dioxide into glucose.
