Flashcards on Cellular Respiration: ATP and Energy Production
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What is cellular respiration?
Cellular respiration is the process by which cells break down glucose and other organic molecules to produce ATP.
What is ATP?
ATP (adenosine triphosphate) is the energy currency of the cell. It stores and transports energy for cellular processes.
How is ATP produced in cells?
ATP is produced through the process of cellular respiration, specifically during the electron transport chain in aerobic respiration.
What are the main stages of cellular respiration?
The main stages of cellular respiration are glycolysis, the citric acid cycle, and oxidative phosphorylation (electron transport chain).
What is glycolysis?
Glycolysis is the initial step of cellular respiration, where glucose is broken down into pyruvate molecules.
What is the citric acid cycle (Krebs cycle)?
The citric acid cycle is a series of chemical reactions that occur in the mitochondria and produce high-energy molecules used in the electron transport chain.
What is oxidative phosphorylation?
Oxidative phosphorylation is the final step of cellular respiration, where ATP is produced using energy from the electron transport chain.
What is the role of oxygen in cellular respiration?
Oxygen is the final electron acceptor in the electron transport chain of cellular respiration, allowing for the production of ATP through oxidative phosphorylation.
What happens during anaerobic respiration?
During anaerobic respiration, cells produce ATP without the presence of oxygen, usually through the process of fermentation.
How is energy released from ATP?
Energy is released from ATP when the bond between the second and third phosphate groups is broken, resulting in the formation of ADP (adenosine diphosphate) and a free phosphate group.
What is the role of ATP in cellular processes?
ATP provides energy for various cellular processes, such as muscle contraction, active transport, and protein synthesis.