Electron transport chain

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Oxidative phosphorylation

Chemiosmosis

Technology

Copyright ? 2011 Pearson Education, Inc. - 1 - Name_______________________Period___________ Chapter 9: Cellular Respiration: Harvesting Chemical Energy Overview: Before getting involved with the details of cellular respiration and photosynthesis, take a second to look at the big picture. Photosynthesis and cellular respiration are key ecological concepts involved with energy flow. Use Figure 9.2 to label the missing parts below. See page 163 of your text for labeled figure. Concept 9.1 Catabolic pathways yield energy by oxidizing organic fuels 1. Explain the difference between fermentation and cellular respiration. Fermentation is a partial degradation of sugars or other organic fuel that occurs without the use of oxygen.

chapter 9 test biology

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BIOLOGY: Chapter 9-Cellular Respiration Multiple Choice Identify the letter of the choice that best completes the statement or answers the question. ____ 1. Which of the following is the correct sequence of events in cellular respiration? a. glycolysis ? fermentation ? Krebs cycle b. Krebs cycle ? electron transport ? glycolysis c. glycolysis ? Krebs cycle ? electron transport d. Krebs cycle ? glycolysis ? electron transport ____ 2. Which of the following is released during cellular respiration? a. oxygen b. air c. energy d. lactic acid ____ 3. Cellular respiration uses one molecule of glucose to produce a. 2 ATP molecules. b. 34 ATP molecules. c. 36 ATP molecules. d. 38 ATP molecules.

chapter 9 test biology

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BIOLOGY: Chapter 9-Cellular Respiration Multiple Choice Identify the letter of the choice that best completes the statement or answers the question. ____ 1. Which of the following is the correct sequence of events in cellular respiration? a. glycolysis ? fermentation ? Krebs cycle b. Krebs cycle ? electron transport ? glycolysis c. glycolysis ? Krebs cycle ? electron transport d. Krebs cycle ? glycolysis ? electron transport ____ 2. Which of the following is released during cellular respiration? a. oxygen b. air c. energy d. lactic acid ____ 3. Cellular respiration uses one molecule of glucose to produce a. 2 ATP molecules. b. 34 ATP molecules. c. 36 ATP molecules. d. 38 ATP molecules.

Biology respiration objectives

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Oxidative phosphorylation

metabolism

Adenosine triphosphate

Photosynthesis

Vocabulary Entropy- a thermodynamic quantity representing the unavailability of a system's thermal energy for conversion into mechanical work, often interpreted as the degree of disorder or randomness in the system Catabolism- the breakdown of complex molecules in living organisms to form simpler ones, together with the release of energy; destructive metabolism. Anabolism- the synthesis of complex molecules in living organisms from simpler ones together with the storage of energy; constructive metabolism. Cellular Respiration- the metabolic processes whereby certain organisms obtain energy from organic molecules Glycolysis- the breakdown of glucose by enzymes, releasing energy and pyruvic acid.

Cellular respiration review sheet

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Pyruvic acid

Crista

Fermentation

Carbohydrate catabolism

mitochondrion

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CELLULAR RESPIRATION MULTIPLE CHOICE. Circle ALL that are TRUE. There may be more than one correct answer. _______________________ is the first step in cellular respiration that begins releasing energy stored in glucose. A. Alcoholic fermentation B. Lactic acid fermentation C. Glycolysis D. Electron transport chain The carriers for energy and high energy electrons during GLYCOLYSIS are ________. A. ATP B. NADH C. FADH2 D. NADPH If oxygen is NOT present, glycolysis is followed by _____________________ A. Krebs cycle B. electron transport chain C. fermentation Name the 3 carbon molecule produced when glucose is broken in half during glycolysis. A. pyruvic acid B. lactic acid C. Acetyl-CoA D. citric acid

Glycolysis Pathway Quiz and answers

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Glucose

ion

Glycolysis Worksheet ? Answer Sheet 1. Explain why the phosphate end of ATP stores potential energy. Each of the phosphate groups is negatively charged. These negative repel each other and so they would have less energy if they were further apart. 2. Which has more potential energy, ATP or ADP? ATP has more potential energy than ADP since it has three negatively charged phosphates held together vs only two in ADP. 3. Write the overall reaction for cellular respiration. Glucose + 6 O2 6 CO2 + 6 H2O (+ energy in the form of ATP and heat) 4. What atom is known as an ?electron grabber? because it attracts electrons so strongly? oxygen 5. What is an electron transport chain?

Test on Metabolism and Energy Chapter 7 and 8

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Name: ______________________ Class: _________________ Date: _________ ID: A 1 Test on Energy and Metabolism--Chapters 7 and 8 Multiple Choice Identify the choice that best completes the statement or answers the question. ____ 1 An endergonic reaction can proceed only if it absorbs: A. less free energy than was released by a coupled endergonic reaction. B. the same amount of free energy that is absorbed by the enzymatic breakdown of proteins. C. energy from ADP, forming ATP. D. less free energy than is released by a coupled exergonic reaction. E. more free energy than is released by a coupled exergonic reaction. ____ 2 If one continues to increase the temperature in an enzyme-catalyzed reaction, the rate of the reaction: A. decreases and then levels off.

AP Bio Unit Objectives (Chapter 9)

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Chapter 9: Cellular Respiration, Harvesting Chemical Energy The principles of energy harvest Cellular respiration and fermentation are catabolic energy yielding pathways Cells recycle ATP they use for work Redox reactions release energy when electrons move closer to electronegative atoms Electrons ?fall? from organic molecules to oxygen during cellular respiration The ?fall? is stepwise during respiration via NAD+ and an electron transport chain The process of cellular respiration Respiration involves glycolysis, Krebs cycle and electron transport Glycolysis harvests chemical energy by oxidizing glucose to pyruvate The Krebs cycle completes the energy yielding oxidation of organic molecules

bio, cell respiration

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cellular respiration

biochemistry

Chemistry

Glycolysis

Chemiosmosis

Oxidative phosphorylation

Pyruvate decarboxylation