B-Block+Cellular+Respiration

= Cellular Respiration = =Cellular respiration- The oxidation of organic compounds that occurs within cells, producing energy for cellular processes. We get our energy from the foods we eat. The most efficient way for cells to harvest energy stored in our food is through cellular respiration. A cataboloc pathway for the production of adenosine triphosphate ATP is a high energy molecule which is expanded by working celss. Cellular Respiration occurs in both eukaryotic and prokaryotic cells. this has three main stages which are: glycolsis, the citric acid cycle and electron transport. Cellular respiration is the process of a oxidizing food molecules, like glucose, to carbon dioxide and water.= ==The equation for cellular respiration is C6H12O6 + 6O2 + 6H2O → 12H2O + 6 CO2+energy. The energy that is trapped which is from the ATP for the use of all energy- consuming activites of that cell. This process occurs in two phases: 1.Glycoysis the break down of glucose to pyruvic acid 2. the complete of oxidation of pyruvic acid to carbon dioxide and water.==

Glycolysis:
==Glycolysis means "splitting sugars". The process, that two molecules of ATP two molecules of pyruvic acid and two "high energy" electron carrying molecules of NADH are produced. Glycolysis can occur with or without oxygen. In the presence of oxygen, glycolysis is the first stage of cellular respiration. Without oxygen, glycolysis allows cells to make small amounts of ATP. This process is called fermentation.==

**The Citric Acid Cycle**:
==The Citric Acid Cycle or Krebs Cycle begins after the two molecules of the three carbon sugar produced in glycolysis are converted to a slightly different compound (acetyl CoA). Through a series of intermediate steps, several compounds capable of storing "high energy" electrons are produced along with two ATP molecules. These compounds, known as nicotinamide adenine dinucleotide (NAD) and flavin adenine dinucleotide (FAD), are reduced in the process. These reduced forms carry the "high energy" electrons to the next stage. The Citric Acid Cycle occurs only when oxygen is present but it doesn't use oxygen directly.==

**Electron Transport**:
==Electron Transport requires oxygen directly. The electron transport "chain" is a series of electron carriers in the membrane of the mitochondria in eukaryotic cells. Through a series of reactions, the "high energy" electrons are passed to oxygen. In the process, a gradient is formed, and ultimately ATP is produced.== ==prokaryotic cells can yield a maximum of 38 ATP molecules while eukaryotic cells can yield a maximum of 36. In eukaryotic cells, the NADH molecules produced in glycolysis pass through the mitochondrial membrane, which "costs" two ATP molecules.== == How Cellular Respiration is important to life? Cellular Respiration provides the essential energry to perform work, everyday tasks and all bodily functions. For example the gas we put in our cars is made of a solution of diffrent solutions. ==

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