The function of which of the following organelles directly requires oxygen? a. ribosome b. mitochondrion c. nucleus d. centriole e. golgi appartatus Answer: b

Which of the following produces the most ATP per mole of glucose during aerobic cellular respiration? a. Glycolysis b. Electron transport chain and chemiosmosis c. Substrate-level phosphorylation d. Kreb’s cycle e. Alcoholic fermentation Answer: b

Which metabolic process is common to both aerobic cellular respiration and alcoholic fermentation? a. Krebs cycle b. Glycolysis c. Electron transport chain d. Conversion of pyruvic acid to acetyl CoA e. Production of a proton gradient Answer: b

1. A membrane-bound electron carrier found in the (A) Cytochrome (B) FADH2 (C) NAD+ (D) NADP+ (E) Oxygen (O2) 1. A membrane-bound electron carrier found in the electron transport systems of both aerobic respiration and photosynthesis. 2. Coenzyme that transfers electrons from the Krebs cycle to the mitochondrial electron-transport chain at a lower energy level than that of the electrons entering at the beginning of the chain. 3. An intermediate electron acceptor for oxidations that occur in both glycolysis and in Krebs cycle reations 4. The final electron acceptor for cellular respiration Answer: A Answer: B Answer: C Answer: E

Energy Flows! Matter Cycles!

High energy bonds

Harvesting Chemical Energy

Purpose Location Products Requirements

Glycolysis “Glucose splitting” Occurs in cytoplasm Net product: 2 ATP PGAL PGAP PGA Net product: 2 ATP 2 NADH PEP (3C Acid)

Kreb's Cycle Citric acid cycle/ Tricarboxylic cycle Occurs in Mitochondrial matrix Oxidation of pyruvate Produce NADH and FADH2 No O2 required

Electron Transport Chain Cytochrome Occurs in mitochondrial Cristae Converts NADH and FADH2 to ATP (chemiosmosis) Oxygen required (final electron acceptor)

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Which of the following produces the most ATP per mole of glucose during aerobic cellular respiration? a. Glycolysis b. Electron transport chain and chemiosmosis c. Substrate-level phosphorylation d. Kreb’s cycle e. Alcoholic fermentation Answer: b

Which metabolic process is common to both aerobic cellular respiration and alcoholic fermentation? a. Krebs cycle b. Glycolysis c. Electron transport chain d. Conversion of pyruvic acid to acetyl CoA e. Production of a proton gradient Answer: b

1. A membrane-bound electron carrier found in the (A) Cytochrome (B) FADH2 (C) NAD+ (D) NADP+ (E) Oxygen (O2) 1. A membrane-bound electron carrier found in the electron transport systems of both aerobic respiration and photosynthesis. 2. Coenzyme that transfers electrons from the Krebs cycle to the mitochondrial electron-transport chain at a lower energy level than that of the electrons entering at the beginning of the chain. 3. An intermediate electron acceptor for oxidations that occur in both glycolysis and in Krebs cycle reations 4. The final electron acceptor for cellular respiration Answer: A Answer: B Answer: C Answer: E

The function of which of the following organelles directly requires oxygen? a. ribosome b. mitochondrion c. nucleus d. centriole e. golgi appartatus Answer: b