Glycolysis, The Krebs Cycle, And The Electron Transport Chain
Glycolysis, the Krebs cycle (or citric acid cycle) and the Electron Transport Chain (ETC) are the three phases of cellular respiration used to completely catabolise glucose.
a) Glycolysis occurs in the cytosol (or cytoplasm), the Krebs cycle occurs within the Mitochondria (or mitochondrial matrix) and the Electron Transport Chain occurs on the Inner Mitochondrial Membrane (Cristae- fold).
b) Anaerobic respiration occurs when low amounts of oxygen (02) are present, releasing low amounts of energy. Aerobic respiration requires the presence of oxygen and releases high amounts of energy. Glycolysis is anaerobic; as it occurs whether or not oxygen is present. The Krebs cycle and Electron Transport Chain both occur in the Mitochondria and are both aerobic, as oxygen is required to release energy.
Part B:
Glycolysis is the anaerobic break down of glucose produced by carbohydrates in the body and is the primary step of any living respiratory system. Glycolysis initially begins with Glucose, a six-carbon sugar (C6) gaining entry into the cytosol via a GLUT-4 transporter. Within this process, two Adenosine Triphosphate (ATP) molecules, two reduced Nicotinamide Adenine Dinucleotide (NADH) molecules and two molecules of pyruvate acid (C3) are generated. …show more content…
The Krebs cycle begins with the conversion of pyruvate acid into Acetyl-Coenzyme A (Acetyl CoA), which occurs when the two-pyruvate molecules (produced by Glycolysis) cross over the Mitochondrial membrane, generating two NADH molecules. The Acetyl CoA molecules are used in the first step of the Krebs cycle. The acetyl group then detaches from the co enzyme allowing specific individual enzymes to continue the cycle. The final product of the Krebs cycle will result in two ATP molecules, six NADH molecules, two reduced Flavin Adenine Dinucleotide (FADH2) molecules and the complete oxidisation of
a) Glycolysis occurs in the cytosol (or cytoplasm), the Krebs cycle occurs within the Mitochondria (or mitochondrial matrix) and the Electron Transport Chain occurs on the Inner Mitochondrial Membrane (Cristae- fold).
b) Anaerobic respiration occurs when low amounts of oxygen (02) are present, releasing low amounts of energy. Aerobic respiration requires the presence of oxygen and releases high amounts of energy. Glycolysis is anaerobic; as it occurs whether or not oxygen is present. The Krebs cycle and Electron Transport Chain both occur in the Mitochondria and are both aerobic, as oxygen is required to release energy.
Part B:
Glycolysis is the anaerobic break down of glucose produced by carbohydrates in the body and is the primary step of any living respiratory system. Glycolysis initially begins with Glucose, a six-carbon sugar (C6) gaining entry into the cytosol via a GLUT-4 transporter. Within this process, two Adenosine Triphosphate (ATP) molecules, two reduced Nicotinamide Adenine Dinucleotide (NADH) molecules and two molecules of pyruvate acid (C3) are generated. …show more content…
The Krebs cycle begins with the conversion of pyruvate acid into Acetyl-Coenzyme A (Acetyl CoA), which occurs when the two-pyruvate molecules (produced by Glycolysis) cross over the Mitochondrial membrane, generating two NADH molecules. The Acetyl CoA molecules are used in the first step of the Krebs cycle. The acetyl group then detaches from the co enzyme allowing specific individual enzymes to continue the cycle. The final product of the Krebs cycle will result in two ATP molecules, six NADH molecules, two reduced Flavin Adenine Dinucleotide (FADH2) molecules and the complete oxidisation of