Ch 6: Cellular respiration

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Questions and Answers

Where does glycolysis take place?

  • Cytoplasm (correct)
  • Nucleus
  • Endoplasmic Reticulum
  • Mitochondria

What is the primary goal of cellular respiration?

  • Convert glucose into proteins
  • Produce carbon dioxide
  • Produce adenosine triphosphate (ATP) (correct)
  • Create water molecules

Which stage of respiration converts glucose into two molecules of pyruvate?

  • Oxidative Phosphorylation
  • Krebs Cycle
  • Glycolysis (correct)
  • Anaerobic Respiration

What is the net gain of ATP molecules from one molecule of glucose in glycolysis?

<p>Two (A)</p> Signup and view all the answers

Which type of respiration involves the Krebs Cycle?

<p>Aerobic Respiration (B)</p> Signup and view all the answers

What is the purpose of oxidative phosphorylation in aerobic respiration?

<p>Produce ATP using electron transport chain (A)</p> Signup and view all the answers

Which molecule is NOT produced during glycolysis?

<p>FADH2 (B)</p> Signup and view all the answers

Where does the Krebs Cycle take place?

<p>Mitochondrial Matrix (C)</p> Signup and view all the answers

What is the starting molecule for the Krebs Cycle?

<p>Pyruvate (C)</p> Signup and view all the answers

Which molecule is fully oxidized to carbon dioxide in the Krebs Cycle?

<p>Acetyl CoA (D)</p> Signup and view all the answers

How many ATP molecules are produced per glucose molecule in the Krebs Cycle?

<p>2 ATP (B)</p> Signup and view all the answers

Where does Oxidative Phosphorylation take place?

<p>Inner Mitochondrial Membrane (A)</p> Signup and view all the answers

What drives the synthesis of ATP in Oxidative Phosphorylation?

<p>Proton Gradient (A)</p> Signup and view all the answers

How many ATP molecules are approximately obtained from Oxidative Phosphorylation?

<p>34 ATP (C)</p> Signup and view all the answers

What is the total ATP yield per glucose molecule in aerobic respiration?

<p>38 ATP (C)</p> Signup and view all the answers

Which stage of cellular respiration converts glucose into pyruvate?

<p>Glycolysis (C)</p> Signup and view all the answers

In which cellular component does glycolysis occur?

<p>Cytoplasm (B)</p> Signup and view all the answers

What is the primary product of the Krebs Cycle?

<p>CO2 (D)</p> Signup and view all the answers

Which stage of aerobic respiration requires oxygen?

<p>Oxidative Phosphorylation (D)</p> Signup and view all the answers

What is the function of oxidative phosphorylation in cellular respiration?

<p>Generates the majority of ATP (B)</p> Signup and view all the answers

Which molecules are produced during glycolysis?

<p>Pyruvate and NADH (A)</p> Signup and view all the answers

Where does oxidative phosphorylation take place in a eukaryotic cell?

<p>Mitochondria (D)</p> Signup and view all the answers

What molecules enter the Krebs Cycle after being oxidized from glycolysis?

<p>Pyruvate (D)</p> Signup and view all the answers

In oxidative phosphorylation, what is the role of redox reactions?

<p>Pump electrons across the mitochondrial membrane (C)</p> Signup and view all the answers

What is the primary function of the electron transport chain in cellular respiration?

<p>Transfer electrons to oxygen (C)</p> Signup and view all the answers

During cellular respiration, what drives the synthesis of ATP?

<p>Proton gradient across the mitochondrial membrane (D)</p> Signup and view all the answers

Which statement is true about the efficiency of aerobic respiration compared to anaerobic processes?

<p>Efficiency of aerobic respiration is higher (D)</p> Signup and view all the answers

What is the total ATP yield per glucose molecule after completing both the Krebs Cycle and Oxidative Phosphorylation?

<p>38 ATP (D)</p> Signup and view all the answers

Which part of the cell houses the electron transport chain during oxidative phosphorylation?

<p>Inner Mitochondrial Membrane (A)</p> Signup and view all the answers

What is the final product when acetyl CoA is fully oxidized in the Krebs Cycle?

<p>Carbon Dioxide (B)</p> Signup and view all the answers

What is the net gain of NADH molecules from one molecule of glucose in glycolysis?

<p>2 (C)</p> Signup and view all the answers

Where specifically does the Krebs Cycle (Citric Acid Cycle) occur within the cell?

<p>Mitochondrial matrix (B)</p> Signup and view all the answers

Which process involves the conversion of one molecule of glucose into two molecules of pyruvate?

<p>Glycolysis (B)</p> Signup and view all the answers

During cellular respiration, what is the primary function of converting biochemical energy from nutrients?

<p>Release of ATP (A)</p> Signup and view all the answers

What is the total number of ATP molecules produced from one molecule of glucose after completing both the Krebs Cycle and Oxidative Phosphorylation?

<p>36-38 (D)</p> Signup and view all the answers

Which stage of aerobic respiration is known for producing the most ATP molecules from one molecule of glucose?

<p>Oxidative Phosphorylation (D)</p> Signup and view all the answers

Where does the process of oxidative phosphorylation primarily occur within the cell?

<p>Mitochondrial inner membrane (D)</p> Signup and view all the answers

What is the role of NADH in cellular respiration?

<p>Accepting electrons in the Krebs cycle (D)</p> Signup and view all the answers

Which part of the cell membrane is responsible for creating a proton gradient during oxidative phosphorylation?

<p>Inner Mitochondrial Membrane (D)</p> Signup and view all the answers

What is the purpose of FADH2 in cellular respiration?

<p>Donating electrons in oxidative phosphorylation (C)</p> Signup and view all the answers

Where does chemiosmosis occur in cellular respiration?

<p>Intermembrane Space (B)</p> Signup and view all the answers

Which statement accurately describes the relationship between glycolysis and the Krebs cycle?

<p>The products of glycolysis directly enter the Krebs cycle (A)</p> Signup and view all the answers

During cellular respiration, where are high-energy electrons carried by NADH and FADH2 ultimately used?

<p>In redox reactions of the electron transport chain (C)</p> Signup and view all the answers

What is the main function of ATP synthase in cellular respiration?

<p>To catalyze the synthesis of ATP from ADP and Pi (C)</p> Signup and view all the answers

Which statement correctly describes the relationship between aerobic respiration and anaerobic processes?

<p>Aerobic respiration yields more energy per glucose molecule than anaerobic processes (D)</p> Signup and view all the answers

What is the total ATP yield per glucose molecule in aerobic respiration?

<p>38 ATP (B)</p> Signup and view all the answers

Where does the energy released during redox reactions in the electron transport chain drive the pumping of protons?

<p>Into the intermembrane space (C)</p> Signup and view all the answers

What is the primary role of the Krebs cycle in cellular respiration?

<p>Oxidizing pyruvate to acetyl CoA (A)</p> Signup and view all the answers

Where does chemiosmosis occur in oxidative phosphorylation?

<p>In the mitochondrial intermembrane space (A)</p> Signup and view all the answers

What is the main function of the electron transport chain during cellular respiration?

<p>Proton pumping (C)</p> Signup and view all the answers

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