Chapter 3 Homework: From Textbook Quick Check Questions. 20 points. Due next mee
ID: 3508611 • Letter: C
Question
Chapter 3 Homework: From Textbook Quick Check Questions. 20 points. Due next meeting. Hardcopy or email. 1. Name and describe the 3 stages of glucose oxidation in the order in which they occur In which stage(s) is oxygen consumed? In which stage(s) is carbon dioxide produced? Which stage normally produces the most ATP? Which stage(s) occur(s) in the cytosol? 2. Distinguish between substrate-level phosphorylation and oxidative phosphorylation. In which stage(s) does substrate-level phosphorylation occur? In which stage does oxidative phosphorylation occur? 3. Which conditions are likely to cause an increase in the rate of lactate production by cells? Why? 4. Cyanide binds to complex IV of the electron transport system, preventing the reduction of oxygen to water Describe the ultimate effects of cyanide on electron transport, oxygen consumption, and ATP production. How can these changes affect a person?Explanation / Answer
The three stages of glucose oxidation are
The consumption of Oxygen occurs most in the Kreb's cycle.
The release of Carbon dioxide occurs most in the Kreb's cycle
Conversion of Glucose to Pyruvate takes place in Cytosol
2. Substrate level Phosphorylation occurs when the direct conversion of ADP to ATP takes place directly from the substrate release of Phosphate whereas Oxidative phosphorylation is when the conversion of ADP to ATP takes place with the substrate undergoing an intermediate redox reaction to release Phosphate
3. Various conditions causing increased lactate production are
These all lead to a local enviorment of decreased oxygen concentration thus to attain some energy cells undergo anaerobic oxidation of glucose to prduce lactic acid
4. Cyanide binds with the receptors of mitochondrial matrix reventing the ingress of oxygen into the mitochondria thus the Electron transport chain is halted producing no oxygen is consumed no ATP is produced by Krebs cycle anaerobic respiration may continue producing excessive lactic acid thus leading to a condition of cyanosis characterised by bluish discoloration of skin .
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