Oxygen reduction and optimum production of ATP in photosynthesis (2024)

FAQs

What causes the production of ATP during photosynthesis? ›

The chlorophyll obtains its electrons from water (H₂O), producing O₂ as a by-product. During the electron-transport process, H⁺ is pumped across the thylakoid membrane, and the resulting electrochemical proton gradient drives the synthesis of ATP in the stroma.

Photophosphorylation is the process in which light energy is converted into chemical energy through the production of ATP.

Hence, the light reaction supports formation of ATP and Oxygen during the process of photosynthesis.

Statistics 8 photons are used per 1 O2 produced. For every O2 produced 4 ATP are made and 2 NADPH. 1 NADPH can produce 3 ATP.

Electron transport through photosystem II is thus coupled to establishment of a proton gradient, which drives the chemiosmotic synthesis of ATP.

During the light reaction of photosynthesis, phosphorylation occurs, wherein inorganic phosphate is added to ADP and results in the formation of ATP. Since this process utilises light energy, it is called photophosphorylation.

ATP synthesis in the light reaction is linked to the development of a proton gradient and breaking down the gradient by chemiosmosis. Accumulation of protons occurs in the lumen of thylakoids protons return through the ATP synthase complex and catalyze the formation of ATP. This process is called photophosphorylation.

Short Answer. Cellular respiration generates the most ATP for driving cellular activities in plants. While photosynthesis produces a limited amount of ATP mainly used for its own process, cellular respiration can generate up to 36-38 ATP molecules per glucose molecule, providing energy for various cellular activities.

During photosynthesis, plants take in carbon dioxide (CO₂) and water (H₂O) from the air and soil. Within the plant cell, the water is oxidized, meaning it loses electrons, while the carbon dioxide is reduced, meaning it gains electrons. This transforms the water into oxygen and the carbon dioxide into glucose.

Expert-Verified Answer. In light-dependent reactions are carbon dioxide and oxygen involved in photosynthesis atp production. In the light-dependent or photochemical stage, bioluminic reactions occur inside the plant.

What is the ATP synthesis in photosynthesis involves? ›

During photosynthesis, ATP is synthesised in the plants by the ATP Synthase. ATP synthesis occurs through chemiosmosis. A proton gradient is created across the thylakoid membrane. Protons are accumulated in the thylakoid lumen as opposed to intermembrane space in the mitochondria.

In photosynthesis, the radiant energy of the sun is converted into chemical energy. It is bound in the chemical bonds of the carbohydrates. In respiration, the carbohydrates are oxidised through a series of reactions and the energy released is trapped in ATP molecules.

Detailed Solution. The correct answer is 18. In the process of Photosynthesis, 18 molecules of A.T.P are involved in the synthesis of each molecule of Glucose. The formation of one molecule of glucose this cycle repeats 6 times and the required amount of ATP is 18.

For every fixed carbon dioxide molecule 3 ATP molecules are required. Glucose is made up of 6 carbon molecules, hence 18 ATP molecules are required to fix 6 molecules of carbon in the process of photosynthesis.

The reactants of photosynthesis are sunlight, carbon dioxide and water. The products are glucose, a sugar, and oxygen. Glucose can be used to create ATP during cellular respiration, but ATP is not directly produced during photosynthesis.

Many processes are capable of producing ATP in the body, depending on the current metabolic conditions. ATP production can occur in the presence of oxygen from cellular respiration, beta-oxidation, ketosis, lipid, and protein catabolism, as well as under anaerobic conditions.

ATP is also formed from the process of cellular respiration in the mitochondria of a cell. This can be through aerobic respiration, which requires oxygen, or anaerobic respiration, which does not. Aerobic respiration produces ATP (along with carbon dioxide and water) from glucose and oxygen.

During the process of producing food in the form of glucose by plants using light energy from the sun, the phenomenon of chemiosmosis plays a pivotal role in harnessing the energy derived from the proton gradient generated by the excitation of electrons. This process drives the majority of ATP synthesis.