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Download Homework 3-1 Reading Notes Campbell`s Chapter 9
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Homework 3-1 Reading Notes Campbell’s Chapter 9 Assignment #1: Read pp. 162-152 BIG PICTURE OVERVIEW FOR RESPIRATION AND PHOTOSYNTHEIS: Sketch Fig. 9-2 (p. 162) 9.1 CATABOLIC PATHWAYS YIELD ____________ BY OXIDIZING ORGANIC _________ (p. 162) p. 163: Define: Fermentation- Cellular Respiration- General Reaction for respiration: Organic compounds + O2 → Balanced Reaction for oxidation of glucose: Briefly discuss what ATP is and how it is used in the cell: Define the following: Redox reaction: Oxidation Reduction Give one example of a redox reaction; identify the reactant that is oxidized and the reactant that is reduced. OXIDATION OF ORGANIC FUEL MOLECULES DURING CELLULAR RESPIRATION (p. 164) In general, organic molecules that have an abundance of _________________ are excellent fuels because their bonds are a source of “hilltop” electrons, whose energy may be released as the electrons “fall” down an _______________ gradient when they are transferred to ______________. Briefly describe the structures of NAD+ vs. NADH and the role of NADH in the cell. Explain the key idea about energy release in combustion reactions vs. respiration expressed in Fig. 9-5 on page 165.. RECOPY FIGURE 9.6 on page 166 exactly. MEMORIZE THIS DIAGRAM. The 3 major steps of aerobic Cellular respiration are 1) 2) 3) Define substrate level phosphorylation: 9-2: GLYCOLYSIS HARVESTS CHEMICAL ENERGY BY OXIDIZING ___________________ TO _____________________. (p. 167) RECOPY FIG. 9.8, p. 167 THE CITRIC ACID (KREB’S) CYCLE ________________________ THE ENERGYYIELDING OXIDATION OF ORGANIC MOLECULES. Pyruvate is converted into ___________________________. Copy Fig. 9.10, p. 170 Copy Fig. 9.11, p. 170 ASSIGNMENT #2: Oxidative Phosphorylation , In Fig. 9.13 on p. 173, Electrons from NADH and FADH2 are passed down the ________________-_________________ chain and are ultimately transferred to ______. Copy Fig. 9-16 p. 175 Use Fig. 9.17 on p. 176 to fill in the # of ATP produced in each step of cellular respiration. Also indicate whether ATP is formed by substrate-level phosphorylation or oxidative phosphorylation. # of ATP Glycolysis Link rxn(CoA shuttle) Kreb’s Cycle Oxidative Phosphorylation Total Why is the total count an approximation? substrate or oxidative phosphorylation Copy Fig. 9.18 Fermentation p. 178 Copy 9.19, Pyruvate as juncture, p. 179 p. 180 A metabolic sequence called beta oxidation breaks fatty acid down to _____carbon fragments, which enter as _________ _____. Copy Fig. 9.20, p. 180 p. 181, Regulation of Cellular Respiration Via Feedback Mechanisms The cell does not _____________ energy by making more of a particular substance than it needs. If there is a glut of certain amino acid, for example, the anabolic pathway that synthesizes the amino acid from an intermediate in the citric acid cycle is switched off. The most common mechanism for this control is __________________ ______________________. The _______ _______________ of the anabolic pathway inhibits the enzyme that catalyzes an ________ step of the pathway. Explain the role of phosphofructokinase in regulating glycolysis.