from energy used in light.
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.
From electrons in photosystem I that are excited to a higher energy state by photons of light. Then NADP + is reduced to become NADPH
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.
Photosystem 1
ATP is produced through the process of cellular respiration in the mitochondria of plant cells. NADPH is generated during the light reactions of photosynthesis in the chloroplasts. Both ATP and NADPH are used as energy sources for the Calvin cycle to run the biochemical reactions that convert carbon dioxide into glucose.
Photosystem 1
NADPH donates high-energy electrons to the Calvin cycle, specifically to help reduce carbon dioxide into carbohydrates. These electrons come from the light-dependent reactions in photosynthesis and are crucial for the production of sugars in plants.
In light-dependent reactions of photosynthesis, water (H₂O) is sourced from the plant's roots, where it is absorbed from the soil. Light energy is captured from sunlight by chlorophyll and other pigments in the thylakoid membranes of chloroplasts. This energy splits water molecules into oxygen, protons, and electrons, with oxygen being released as a byproduct. The electrons are then used to generate energy-rich molecules like ATP and NADPH.
Damaged Power Plants
The energy in nuclear reactions comes from the splitting or combining of atomic nuclei, which releases a large amount of energy in the form of radiation and heat.
From the motion of the hydrogen ions
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.