0
Photosystem 1
What else can I help you with?
How is light energy processed in the light reaction of photosynthesis?
In simple terms, photosynthesis is the conversion of carbon dioxide (CO2) to carbohydrate (CH2O). To do this two things are needed: energy to drive the reaction and a source of hydrogen. The light reaction of photosynthesis produces two essential substances: ATP and NADPH. ATP provides the energy for the conversion of CO2 to CH2O, and NADPH provides the hydrogen. The light reaction depends on groups of chlorophyll molecules, called photosystems, absorbing light energy. The energy is used to eject high energy electrons from the chlorophyll. The energy in the electrons is then used to make ATP and NADPH. There are two photosystems, called photosystem I (PSI) and photosystem II (PSII), which work in sequence. (PSII comes before PSI in the sequence, but they were discovered and named in the reverse order!). PSII absorbs light and emits a high energy electron. The energetic electron then passes down a series of molecules, called an electron transport chain (ETC), releasing energy as it goes (you can visualise it as a ball bouncing down a set of stairs, losing energy as it falls). The energy released is used to make the energy carrier compound ATP. To replace the electrons lost from chlorophyll in PSII water (H2O) is split into hydrogen ions (H+), electrons (e-) and oxygen atoms (O): H2O = 2H+ + 2e- + O This is the source of the oxygen released by photosynthesis. The second photosystem, PSI, also absorbs light and emits a high energy electron from chlorophyll. The energy in this electron is used to drive the synthesis of NADPH from NADP+ ,hydrogen ions (H+) and electrons (e-): NADP+ + 2H+ + 2e- = NADPH + H+ The hydrogen ions needed for this come from the water which was split by PSII. The electrons lost from the chlorophyll in PSI are replaced by the electrons ejected from PSII. The result of all this is that light energy is converted into chemical energy in ATP, water is split to provide the hydrogen needed to make NADPH, and oxygen is released as a waste product. The ATP and NADPH are then used in the light independent reaction (the Calvin cycle) to concert carbon dioxide into carbohydrate.
Where does the energy for the light independent reactions of photosynthesis come from?
splitting of water molecules
What happens during light reactions in photosynthesis?
light strikes photosystem 2, exciting the electrons. The electron come from a water molecule that has been split into hydrogen and oxygen. That is the first reactant (water), and Oxygen gas is given off as the first product. The excited electrons then travel down a short electron transport chain, and while doing so they pump H+ molecules (hydrogen molecules) into the inner thylakoid space across the thylakoid membrane from the stroma. The electrons are then passed, at the end of the transport chain, to photosystem 1, where they are re-excited by light. The electrons are passed down another short electron transport chain, which pumps a few more H+ into the thylakoid space, then the electrons get passed to a molecule of NADP+, which is reduced to NADPH. NADPH is a product, NADP+ a reactant. The H+ in the thylakoid then diffuse back into the stroma through a molecule of ATP Synthase that is a channel through the memebrane of the thylakoid. As they pass through the ATP synthase, the H+ make the ATP Synthase go into it's active conformation so it is able to turn ADP into ATP. ADP is a reactant, ATP is a product. To sum it all up, H20, NADP+, and ADP are reactants, and oxygen, NADPH, and ATP are products
What are produced during the light reactions of photosynthesis?
during a light reaction two things are responsible for producing a reaction containing the 5 elelments responsible for these reaction. First and foremost an wavelength supplied by a DC current in other words what comes in and out of the friction of the wave... to be made from the original source one is then able to determine what is beiong produced by the actual current. Your question is fundamentally flawed in the fact that you have not stated the acvtual source of the light in which comes forth from. Are we talking about gas? are we talking about electromagnetisis? Or is it aq simple halogen light that you speak of? In order to assist you further I must know more information, you must restate your question in the form that would indicate about which light source youi speak of.. much like i could ask what comes out of the exhaust fromn a car.....One would Argue that well of couse exhaust fumes do,.... but what if i were speaking in terms of the car i was describing was electric? that being said please try to state your questions clearer in the future and i may be willing to answer them
Where does the energy for photosynthesis come from and what part of the plant pigments are involved in photosynthesis?
The energy for photosynthesis comes from respiration. The plant takes in oxygen and uses it for energy with in its cells. The chloroplast have a green substance called chlorophyll which absorbes the light needed for photosynthesis. the reaction happens there. Unfortunately the previous answer is not quite right. The ultimate source of energy for photosynthesis is sunlight. Plants convert the light energy into chemical energy in the form of glucose, which they can then use as a source of energy in their cells. Energy is released from glucose by respiration.
Where does the energy come from to make nadph in the lighte reactions?
from energy used in light.
Where does the energy come from to make NADPHin the light reactant?
The energy to make NADPH in the light reactions of photosynthesis comes from sunlight. Light energy is absorbed by chlorophyll molecules in the chloroplasts of plant cells, which triggers a series of reactions that ultimately produce NADPH.
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 ATP energy come from for the Calvin cycle?
The light reaction
Where do electrons come from and how it gains energy during the light reaction?
They come from Photosystem ll. Photosystem ll gets them by ripping the electrons off of water by a process called photolysis. Electrons gain energy first in Photosystem ll, then later in photosystem l, through the absorption of energy from light.
How is light energy processed in the light reaction of photosynthesis?
In simple terms, photosynthesis is the conversion of carbon dioxide (CO2) to carbohydrate (CH2O). To do this two things are needed: energy to drive the reaction and a source of hydrogen. The light reaction of photosynthesis produces two essential substances: ATP and NADPH. ATP provides the energy for the conversion of CO2 to CH2O, and NADPH provides the hydrogen. The light reaction depends on groups of chlorophyll molecules, called photosystems, absorbing light energy. The energy is used to eject high energy electrons from the chlorophyll. The energy in the electrons is then used to make ATP and NADPH. There are two photosystems, called photosystem I (PSI) and photosystem II (PSII), which work in sequence. (PSII comes before PSI in the sequence, but they were discovered and named in the reverse order!). PSII absorbs light and emits a high energy electron. The energetic electron then passes down a series of molecules, called an electron transport chain (ETC), releasing energy as it goes (you can visualise it as a ball bouncing down a set of stairs, losing energy as it falls). The energy released is used to make the energy carrier compound ATP. To replace the electrons lost from chlorophyll in PSII water (H2O) is split into hydrogen ions (H+), electrons (e-) and oxygen atoms (O): H2O = 2H+ + 2e- + O This is the source of the oxygen released by photosynthesis. The second photosystem, PSI, also absorbs light and emits a high energy electron from chlorophyll. The energy in this electron is used to drive the synthesis of NADPH from NADP+ ,hydrogen ions (H+) and electrons (e-): NADP+ + 2H+ + 2e- = NADPH + H+ The hydrogen ions needed for this come from the water which was split by PSII. The electrons lost from the chlorophyll in PSI are replaced by the electrons ejected from PSII. The result of all this is that light energy is converted into chemical energy in ATP, water is split to provide the hydrogen needed to make NADPH, and oxygen is released as a waste product. The ATP and NADPH are then used in the light independent reaction (the Calvin cycle) to concert carbon dioxide into carbohydrate.
Where does the light- dependent come from?
The light-dependent reactions of photosynthesis occur in the thylakoid membranes of chloroplasts. This is where chlorophyll and other pigments absorb light energy and convert it into chemical energy in the form of ATP and NADPH. This energy is then used in the light-independent reactions to produce glucose.
Where do the high-energy electrons carried by NADPH come from?
Photosystem 1
Where does the heat energy and light energy of a candle come from?
The heat energy and light energy of a candle come from the chemical reaction of the candle wax (hydrocarbons) combining with oxygen from the air. This reaction releases energy in the form of heat and light. The heat energy is produced when the chemical bonds are broken and reformed, while the light energy is generated by the incandescence of the soot particles in the flame.
Were does the light and heat from burning wood come from?
The light and heat from burning wood come from the chemical reaction called combustion. When wood burns, the heat and light are produced as a result of the energy released from the chemical bonds breaking down and forming new compounds. The heat provides the energy necessary for the reaction to continue, while the light is a byproduct of the reaction.
Where do the reactants for the light independent reaction come from?
The reactants for the light-independent reaction, also known as the Calvin cycle, primarily come from the products of the light-dependent reactions. These reactants include ATP (adenosine triphosphate) and NADPH (nicotinamide adenine dinucleotide phosphate), both of which are produced during photosynthesis in the thylakoid membrane of chloroplasts. Additionally, carbon dioxide from the atmosphere is also used as a reactant in the Calvin cycle to produce glucose.
What are the two main forms of energy given off when burns and where does the energy come from?
heat and light and it comes from the reaction of the paper material and its combustion in the air.
