Cellular Respiration AP Biology

What are the reactants in the equation for cellular respiration?

• oxygen and lactic acid

• carbon dioxide and water

• glucose and oxygen

• water and glucose

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During chemiosmosis

• H+ ions serve as the final electron acceptor

• a concentration gradient is generated when H+ ions are passively transported from the matrix to the inner mitochondrial membrane

• energy is released as H+ ions move freely across the mitochondrial membrane

• ATP is synthesized when H+ ions move through a channel in ATP synthase

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The final electron acceptor of aerobic respiration is _______ and this allows _______________ to continue.

• oxygen, electron flow

• water, citric acid cycle

• carbon dioxide, aerobic respiration

• NAD+, chemiosmosis

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Anaerobic respiration yields about ______ ATP per glucose whereas aerobic respiration yields about _______ ATP per glucose.

• 38, 2

• 2, 38

• 2, 18

• 18, 2

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NGSS.HS-LS2-3

The electrons that transfer energy to pump protons across the inner mitochondrial membrane were supplied by

• ATP and NADPH

• NADH and FADH2

• water and oxygen

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NGSS.HS-LS1-7

At the end of the Kreb's cycle, where is most of the energy from the original glucose stored?

• in CO₂

• in ATP

• in NADH

• in pyruvate

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Which process is the largest contributor to the release of CO₂ 

• Citric Acid Cycle or Krebs Cycle

• Pyruvate Oxidation

• Glycolysis

• Oxidative Phosphorylation 

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NGSS.HS-LS2-3

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Which of the following processes creates the most ATP during aerobic cellular respiration?

• glycolysis

• fermentation

• electron transport chain

• Citric acid cycle

The number of ATP molecules produced by the Krebs Cycle per glucose molecule is _______. (Reminder it takes two turns of the cycle to use 1 molecule of glucose)

• 2

• 3

• 4

• 0

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How many CO₂ molecules are produced by the Krebs Cycle for a molecule of glucose? (Reminder it takes two turns of the cycle to use 1 molecule of glucose)

• 2

• 4

• 6

• 3

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NGSS.HS-LS1-7

NGSS.HS-LS2-3