Cellular Respiration Checkup Quiz. 1. Of the following products, which is produced by both anaerobic respiration and aerobic respiration in humans?

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1 1. Of the following products, which is produced by both anaerobic respiration and aerobic respiration in humans? I. Pyruvate II. III. ATP Lactate A. I only B. I and II only C. I, II and III D. II and III only. Which is not a product of the Krebs cycle? A. CO B. NADH + H + C. Pyruvate D. ATP 3. What are the end products of aerobic cell respiration? A. Carbon dioxide and ethanol B. Lactate and ATP C. Water, ATP and oxygen D. Water, carbon dioxide and ATP 1

2 4. How many ATP molecules (net yield) are produced per molecule of glucose as a direct result of glycolysis? A. B. 4 C. 10 D What is the correct sequence of chemicals produced in the anaerobic respiration pathway? A. Lactate pyruvate ethanol B. Ethanol pyruvate glucose C. Glucose lactate pyruvate D. Glucose pyruvate lactate 6. Which of the following produce ATP in mitochondria? A. The movement of protons from the matrix to the intermembrane space B. The movement of protons from the intermembrane space to the cytoplasm C. The splitting of water molecules and the movement of electrons to oxygen D. The movement of protons from the intermembrane space to the matrix

3 7. What is the link reaction in eukaryotic respiration? A. Pyruvate joining with coenzyme A to produce CO and NADH + H + B. Oxidation of NADH to yield electrons and protons C. Acetyl coenzyme A combining or joining with a C 4 compound to give C 6 + coenzyme A D. Passage of acetyl coenzyme A through the mitochondrial membrane 8. What is the net production of ATP, per molecule of glucose during the fermentation of glucose to lactate? A. 36 molecules B. 4 molecules C. molecules D. None 9. Aerobic respiration involves conversion of glucose into pyruvate and conversion of pyruvate into carbon dioxide and water. Where do these processes occur in a eukaryotic cell? Where glucose is broken down into pyruvate Where pyruvate is broken down into carbon dioxide and water A. Cytoplasm Cytoplasm B. Cytoplasm Mitochondrion C. Mitochondrion Cytoplasm D. Mitochondrion Mitochondrion 3

4 10. What accumulates in the inter-membrane space of the mitochondrion during electron transport? A. ATP B. Electrons C. Protons (hydrogen ions) D. Oxygen 4

5 11. How many molecules of acetyl CoA (ethanoyl CoA) does the oxidation of the fatty acid stearic acid produce? A. B. 6 C. 9 3 COOH Stearic acid D. 18 5

6 1. Humans can respire aerobically and anaerobically. Which are products of both aerobic cell respiration and anaerobic cell respiration in humans? A. Pyruvate and ATP B. Pyruvate and lactate C. ATP and carbon dioxide D. Lactate and carbon dioxide 13. What is the sequence of stages during the conversion of glucose into pyruvate in glycolysis? A. Lysis phosphorylation of sugar oxidation B. Lysis oxidation phosphorylation of sugar C. Phosphorylation of sugar lysis oxidation D. Phosphorylation of sugar oxidation lysis 14. Anaerobic respiration occurs in the absence of oxygen while aerobic respiration requires oxygen. (a) State one final product of anaerobic respiration.... (b) Complete the table showing the differences between oxidation and reduction. Electrons gained or lost Oxygen or hydrogen gained or lost Oxidation Reduction () 6

7 (c) The structure of a mitochondrion is shown in the electron micrograph below. Name the parts labelled A, B and C and state the function of each. Part A: Name:... Function:... Part B: Name:... Function:... Part C: Name:... Function:... (3) (Total 6 marks) 15. The diagram below shows possible pathways for the breakdown of glucose in various cells. Glucose A Process Q (no oxygen present) Process R (oxygen present) B C + D D + E 7

8 (a) State the names of processes Q and R. Q: R: (b) Deduce the names of substances A and D. A: D: (c) State the organelle in which process R takes place.... (Total 5 marks) 16. (a) (i) Identify the cell organelle shown in the micrograph below. 8

9 (ii) Identify the structure labelled I above and explain how it is adapted for the organelle to function efficiently. (3) (b) Describe the role of acetyl CoA in the metabolism of lipids () (Total 6 marks) 9

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