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Cell Mol: Exam 3 > Cellular Respiration > Flashcards

Cellular Respiration Flashcards

1
Q

What is the starting material for glycolysis?

A

glucose

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2
Q

What are the products of glycolysis?

A
  • 2 NADH
  • 2 ATP (net)
  • 2 pyruvate
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3
Q

Where does glycolysis take place?

A

cytoplasm

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4
Q

Is oxygen required for glycolysis?

A

NO

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5
Q

What happens during acetyl-CoA production?

A
  • Production of NADH
  • Releases CO2
  • Breakdown into acetyl
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6
Q

What is the starting material for acetyl-CoA production?

A

2 pyruvate

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7
Q

What are the products of acetyl-CoA production?

A
  • 2 NADH
  • 2 CO2
  • 2 acetyl-CoA
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8
Q

Where does acetyl-CoA production take place?

A

mitochondria

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9
Q

Is oxygen required for acetyl-CoA production?

A

YES

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10
Q

What are the starting materials for the Krebs cycle?

A

2 acetyl-CoA

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11
Q

What are the products of the Krebs cycle?

A
  • 6 NADH
  • 2 FADH2
  • 4 CO2
  • 2 ATP
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12
Q

Where does the Krebs cycle take place?

A

mitochondria

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13
Q

Is oxygen required for the Krebs cycle?

A

YES

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14
Q

What is the role of high-energy electrons in the electron transport chain?

A

Removed from NADH and FADH2

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15
Q

What happens to electrons in the electron transport chain?

A

Their energy is extracted through exergonic oxidation and reduction reactions

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16
Q

What is the final electron acceptor in the electron transport chain?

A

Oxygen

17
Q

What is produced when oxygen combines with H+ ions?

A

water

18
Q

What are the starting materials for the electron transport chain?

A
  • 10 NADH
  • 2 FADH2
19
Q

What are the products from one glucose molecule in the electron transport chain?

A
  • Each NADH makes 2~3 ATP
  • Each FADH2 makes 1~2 ATP
20
Q

What is the maximum total ATP yield from the electron transport chain?

A

28 ATP

21
Q

What are the components of the electron transport chain?

A
  • 4 large multiprotein Respiratory Complexes: I–IV
  • 2 small, mobile electron carriers: CoQ and Cyto C
22
Q

What is chemiosmosis?

A

The passive movement of ions (H+ in this case) across a membrane

23
Q

What drives ATP synthesis in the chemiosmotic model?

A

Movement of H+ across a membrane

24
Q

How much energy do electrons in NADH and FADH2 produce?

A
  • Electrons in NADH: 2 to 3 ATP
  • Electrons in FADH2: 1 to 2 ATP
25
Q

What is the theoretical maximum yield of ATP per glucose?

A

32 ATP

26
Q

What is the efficiency of cellular respiration?

A

34%

27
Q

What happens to the other 66% of the energy during cellular respiration?

A

Cell Mol: Exam 3 (6 decks)

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