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AP Biology – Raven Text Chp 7 Cell respiration Essential Questions Answer in Note book 7.1 Overview of cell respiration 1) Contrast autotrophs with heterotrophs 2) Define cellular respiration 3) Define digestion 4) Define dehydrogenations 5) What are redox reactions? Why are they important in biological systems? 6) What is NADH? How does NAD+ become NADH? 7) Define electron acceptor 8) Contrast aerobic to anaerobic respiration and relate to fermentation 9) What is the formula for burning carbohydrates? 10)What do electron carriers do? 11)What is the electron transport chain? 12)How does ATP drive a reaction? 7.2 Oxidation of glucose 13)Define substrate level phosphorylation 14)Define Oxidative phosphorylation 15)What are the 4 stages of glucose oxidation? 7.3 Glycolysis 16)Name and briefly describe the 4 steps of glycolysis 17)17)What is the net yield of ATP From glycolysis? 18)3) What happens to NADH after glycolysis? 19)4) What are the 2 ways NADH is recycled back to NAD+? 7.4 Oxidation of Pyruvate 20)What are the 2 steps Energy from pyruvate is harvested? 21)Write the equation of pyruvate to acetyl CoA 7.5 Krebs Cycle 22)What are the 3 segments of the Krebs cycle? List and describe 23)List the 4 reactions of the Krebs cycle and summarize each 7.6 Electron Transport chain 24)What are the 2 molecules formed during Krebs cycle that are carried to ETC? 25)List the proteins that receive electrons from NADH and where they occur 26)How does FADH2 contrast to NADH? 27)What is an electrochemical gradient? 28)What is Chemiosmosis? 29)Describe ATP synthase 7.7 Energy yield Aerobic respiration 30)What is the theoretical yield of ATP from one glucose molecule? 31)What is the actual yield of ATP from glucose? Why is it different? 7.8 Regulation of Aerobic Respiration 32)What are the 2 points of control of glucose metabolism 7.9 Oxidation without O2 33)How do Methanogens perform respiration 34)How do sulfur Bacteria perform respiration? 35)Describe ethanol fermentation 36)Describe lactic acid fermentation 7.10 Catabolism of proteins and fats 37)Describe some ways proteins and fats differ in their catabolism 7.11 Evolution of metabolism 38)Describe some theories of the evolution of cellular metabolism