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Q: Where do water and light come from in light dependent reactions?
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Where does the energy for the light independent reactions of photosynthesis come from?

splitting of water molecules


Where does the energy come from to make at in the light reactions?

From the motion of the hydrogen ions


Where doe the ATP come fom that is used during the light-independent reactions?

From light dependant reaction.


Where does the energy come from to make nadph in the lighte reactions?

from energy used in light.


Why is water split during the light reactions?

The water splitting step in photosynthesis is critical as a source of hydrogen ions (protons). These provide essential chemical energy to drive later chemical reactions.


In photosynthesis the source of electrons is?

The electrons come from water. In the light dependent stage water is split into hydrogen ions (H+), electrons and oxygen. The electrons are passed on to chlorophyll, the H+ ions combine with NADP to form NADPH and the oxygen is released.


What does energy come from to make nadaph in light reactions?

From electrons in photosystem I that are excited to a higher energy state by photons of light. Then NADP + is reduced to become NADPH


Where does the energy required for anabolic reactions come from?

Catabolic reactions.


Where do the reactant come from for Calvin cycle?

glucose and oxygen are the reactants in this equation, glucose come from the sugars broken down from your food and oxygen come from your lungs, passing through the thin cell wall of the bronchioles into your bloodstream which are in turn absorbed by the mitochondria and the process of respiration takes place


Where do the reactants for the light independent reaction come from?

RuBP (Ribulose Biphosphate) is a prexisting molecule in the stroma of the chloroplast. ATP is yielded through Chemiosmosis and NADPH is the final product of the light dependant reactions.


Where does the oxygen for cellular respiration come from?

Large quantities of oxygen are dissolved in water and make up a large percentage of air. Organisms extract it from these media. The ultimate source of molecular oxygen in the air and water appears to be as a byproduct of photosynthesis in plants and some single-celled organisms.


How come there are rainbows on earth?

rainbows are mainly caused by the mixture of water and light when the light from the sun hit the water from rain it creates a rainbow.