Cellular respiration is a collection of three unique metabolic pathways: glycolysis, the citric acid cycle, and the electron transport chain. Glycolysis is an anaerobic process, while the other two pathways are aerobic.
How many metabolic pathways are there in cellular aerobic respiration in anaerobic respiration?
Under anaerobic conditions, the absence of oxygen, pyruvic acid can be routed by the organism into one of three pathways: lactic acid fermentation, alcohol fermentation, or cellular (anaerobic) respiration.
What are the pathways of aerobic respiration?
Cellular respiration is a metabolic pathway that breaks down glucose and produces ATP. The stages of cellular respiration include glycolysis, pyruvate oxidation, the citric acid or Krebs cycle, and oxidative phosphorylation.
What are the 2 pathways of cellular respiration?
You have just read about two pathways in cellular respiration—glycolysis and the citric acid cycle—that generate ATP. However, most of the ATP generated during the aerobic catabolism of glucose is not generated directly from these pathways.
What are the 3 metabolic stages of cellular respiration?
Aerobic (“oxygen-using”) respiration occurs in three stages: glycolysis, the Krebs cycle, and electron transport. In glycolysis, glucose is split into two molecules of pyruvate. This results in a net gain of two ATP molecules.
What is the difference between glycolysis and aerobic respiration?
The Presence of Oxygen
Both begin with glycolysis – the splitting of glucose. Glycolysis (see “Glycolysis” concept) is an anaerobic process – it does not need oxygen to proceed. This process produces a minimal amount of ATP. … Cellular respiration that proceeds in the presence of oxygen is called aerobic respiration.
Is glycolysis aerobic or anaerobic?
Glycolysis, as we have just described it, is an anaerobic process. None of its nine steps involve the use of oxygen. However, immediately upon finishing glycolysis, the cell must continue respiration in either an aerobic or anaerobic direction; this choice is made based on the circumstances of the particular cell.
What is the aerobic pathway?
The aerobic pathway is also known as the Krebs citric acid cycle and the cytochrome chain. In these two steps the by-products of the initial anaerobic glycolysis step are oxidized to produce carbon dioxide, water, and many energy-rich ATP molecules. All together, all these steps are referred to as cell respiration.
Does aerobic require oxygen?
Cellular respiration can occur both aerobically (using oxygen), or anaerobically (without oxygen). During aerobic cellular respiration, glucose reacts with oxygen, forming ATP that can be used by the cell.
What are the three pathways of aerobic metabolism?
Aerobic respiration involves three major processes: glycolysis, the Kreb’s (tricarboxylic acid or TCA) cycle, and oxidative phosphorylation coupling the electron transport chain in the mitochondria with chemiosmosis. Aerobic catabolism of glucose requires oxygen and produces carbon dioxide and metabolic water.
What is the cellular respiration formula?
C 6 H 12 O 6 + 6 O 2 –> 6 CO 2 + 6 H 2 O + ATP is the complete balanced chemical formula for cellular respiration.
What are the outputs of cellular respiration?
Unit 5: Photosynthesis & Cell Respiration
|What are the inputs of cellular respiration?||Glucose, oxygen|
|What are the outputs of cellular respiration?||Carbon dioxide, water, energy (ATP)|
|What is the site of cellular respiration?||Mitochondria|
What does pyruvate do in cellular respiration?
Pyruvic acid supplies energy to cells through the citric acid cycle (also known as the Krebs cycle) when oxygen is present (aerobic respiration), and alternatively ferments to produce lactate when oxygen is lacking (lactic acid).
What are the 3 steps of cellular respiration and where does each occur?
Cellular respiration is the process in which cells break down glucose, release the stored energy, and use it to make ATP. The process begins in the cytoplasm and is completed in a mitochondrion. Cellular respiration occurs in three stages: glycolysis, the Krebs cycle, and electron transport.
What are the 3 main parts of cellular respiration?
Cellular respiration is a collection of three unique metabolic pathways: glycolysis, the citric acid cycle, and the electron transport chain.
What are the three products of cellular respiration?
The two reactants needed for cellular respiration are glucose and oxygen. What are the three products of cellular respiration? The three products of cellular respiration are ATP energy, carbon dioxide, and water.