How is ATP synthesized in photosynthesis?
During photosynthesis in plants, ATP is synthesized by ATP synthase using a proton gradient created in the thylakoid lumen through the thylakoid membrane and into the chloroplast stroma. Eukaryotic ATP synthases are F-ATPases, running “in reverse” for an ATPase. This article deals mainly with this type.
What process is ATP synthesized?
In general, the main energy source for cellular metabolism is glucose, which is catabolized in the three subsequent processes—glycolysis, tricarboxylic acid cycle (TCA or Krebs cycle), and finally oxidative phosphorylation—to produce ATP.
Where is ATP synthesized during photosynthesis?
ATP is produced on the stromal side of the thylakoid membrane, so it is released into the stroma. The electron arrives at photosystem I and joins the P700 special pair of chlorophylls in the reaction center.
How is ATP produced in chloroplasts?
In an intact chloroplast with thylakoid membranes, ATP is generated by an electron flow along the cytochrome transport system. Since the electrons are being transported to other “carrier” molecules, their energy is used to generate ATP and no reddish glow is emitted.
What is the role of ATP in photosynthesis?
ATP can be used to store energy for future reactions or be withdrawn to pay for reactions when energy is required by the cell. Animals store the energy obtained from the breakdown of food as ATP. Likewise, plants capture and store the energy they derive from light during photosynthesis in ATP molecules.
What are the two ways that ATP is synthesized?
The two ATP-producing processes can be viewed as glycolysis (the anaerobic part) followed by aerobic respiration (the oxygen-requiring part).
How is ATP synthesized in the chloroplast?
Abstract. The chloroplast adenosine triphosphate (ATP) synthase is located in the thylakoid membrane and synthesizes ATP from adenosine diphosphate and inorganic phosphate at the expense of the electrochemical proton gradient formed by light-dependent electron flow.
How is ATP produced in photosynthesis and respiration?
Photosynthesis converts carbon dioxide and water into oxygen and glucose. Glucose is used as food by the plant and oxygen is a by-product. Cellular respiration converts oxygen and glucose into water and carbon dioxide. Water and carbon dioxide are by- products and ATP is energy that is transformed from the process.
How is ATP synthesized in mitochondria?
Most of the adenosine triphosphate (ATP) synthesized during glucose metabolism is produced in the mitochondria through oxidative phosphorylation. This is a complex reaction powered by the proton gradient across the mitochondrial inner membrane, which is generated by mitochondrial respiration.
How is ATP used in photosynthesis and cellular respiration?
What is the role of ATP in photosynthesis and cellular respiration?
ATP is an important source of energy for biological processes. Energy is transferred from molecules such as glucose, to an intermediate energy source, ATP. ATP is a reservoir of potential chemical energy and acts as a common intermediate in metabolism, linking energy requiring and energy yielding reactions.
What is the difference between ATP synthesis in respiration and photosynthesis?
Respiration uses a glucose molecule and combines it with oxygen; and the result is energy released in the form of ATP, whereas in photosynthesis water and carbon dioxide combine with water and the end result is glucose.
What are the steps of ATP synthesis?
Complex I – NADH dehydrogenase
What is the equation for the synthesis of ATP?
In plants,algae,and cyanobacteria,non-cyclic photophosphorylation takes place.
What is the process of ATP synthase?
ATP Synthase: A Molecular Motor.Its function is to convert the energy of protons (H +) moving down their concentration gradient into the synthesis of ATP. 3 to 4 protons moving through this machine is enough to convert a molecule of ADP and P i (inorganic phosphate) into a molecule of ATP.
Where does ATP synthase occur?
Adenosine triphosphate (ATP) – The main energy molecule used by the cell.