Cell Respiration

Chapter 9

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Cellular Respiration

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Cellular Respiration

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Questions

Is respiration exergonic or endergonic? Why?

Is fermentation exergonic or endergonic? Why?

Does respiration require enzymes?

What are the 2 catabolic pathways?

How do they differ?

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Questions Answers

Is respiration exergonic or endergonic? Why? Exergonic, releases energy as ATP and heat

Is fermentation exergonic or endergonic? Why? Exergonic, releases energy as ATP and heat

Does respiration require enzymes? Yes

What are the 2 catabolic pathways? Cellular Respiration & Fermentation (EtOH & Lactate)

How do they differ? Respiration requires O2 & Produces 18-19x ATP

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Questions (Page 2)

What are the 4 parts of cellular respiration?

Which of the parts produce ATP?

Which of the parts produce NADH?

Which part(s) of cellular respiration require oxygen?

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Questions (Page 2) Answers

What are the 4 parts of cellular respiration? Glycolysis, Pyruvate Oxidation, TCA, & Oxidative Phosphorylation

Which of the parts produce ATP? All but Pyruvate Oxidation

Which of the parts produce NADH? All but Oxidative Phosphorylation

Which part(s) of cellular respiration require oxygen? Only ETC (part of Oxidative Phosphorylation)

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Questions

What is Glycolysis?

What is produced in Glycolysis?

Where does Glycolysis occur in a eukaryotic cell?

Where does it occur in a prokaryotic cell?

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Questions Answers

What is Glycolysis? Splitting of glucose into 2 pyruvates

What is produced in Glycolysis? 2 ATP, 2 NADH, & 2 Pyruvate

Where does Glycolysis occur in a eukaryotic cell? Cytoplasm or Cytosol

Where does it occur in a prokaryotic cell? Cytoplasm or Cytosol

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Questions

What are the 4 Parts of Cellular Respiration?

What is the purpose of Pyruvate Oxidation?

What is produced in Pyruvate Oxidation?

For each glucose, how many pyruvate oxidations occur?

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Questions Answers

What are the 4 Parts of Cellular Respiration? Glycolysis, Pyruvate Oxidation, TCA, & Oxidative

Phosphorylation

What is the purpose of Pyruvate Oxidation? To transport pyruvate into the mitochondrion

What is produced in Pyruvate Oxidation? CO2, NADH or FADH2, & Acetyl CoA

For each glucose, how many pyruvate oxidations occur? 2

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Questions (Page 2)

Where does the TCA cycle occur in a eukaryotic cell?

Where does it occur in a prokaryotic cell?

What are the 2 alternate names for the TCA cycle?

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Questions (Page 2) Answers

Where does the TCA cycle occur in a eukaryotic cell? Mitochondria

Where does it occur in a prokaryotic cell? Cytoplasm or Cytosol

What are the 2 alternate names for the TCA cycle? Kreb’s Cycle, TriCarboxylic Acid, or Citric Acid Cycle

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Questions (Page 3)

For each glucose, how many turns of the TCA cycle occur?

Each turn of the TCA cycle produces how much: CO2? ATP? NADH? FADH2?

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Questions (Page 3) Answers

For each glucose, how many turns of the TCA cycle occur? 2

Each turn of the TCA cycle produces how much: CO2? = 2 ATP? = 1 NADH? = 3 FADH2? = 1