Cellular Respiration

What are the REACTANTS of cellular respiration?

• glucose & carbon dioxide

• glucose & oxygen

• water & oxygen

• water & carbon dioxide

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During fermentation, yeast will produce CO₂ and___________.

• lactic acid

• alcohol

• hydrogen

• water

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What does metabolism mean?

• Converting energy into food
• Making light reactions happen
• Converting food into energy

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Which process produces the most ATP per molecule of glucose?

• lactic acid fermentation
• aerobic respiration
• alcoholic fermentation
• all are about the same

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Yeast is a(n)

• animal
• plant
• fungus
• bacteria

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Why must we convert food molecules into ATP?

• ATP speeds up all metabolic reactions

• ATP allow one organelle to be exchanged for another between cells

• glucose is made of ATP

• most of the energy needed by cells is supplied by ATP

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NGSS.HS-LS1-7

What happens when you remove the third phosphate group from an ATP molecule?

• energy is released

• an enzyme is formed

• energy is stored

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What happens during glycolysis?

• a molecule of glucose is split

• two pyruvate are made

• some ATP is produced

• all of these happen

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NGSS.HS-LS1-7

In the presence of oxygen, cellular respiration takes place in two stages. They are

• glycolysis and fermentation

• electron transport chain, then fermentation

• the Krebs cycle, then electron transport chain

• glycolysis, then the Calvin cycle

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NGSS.HS-LS1-7

Cells produce ATP most efficiently in the presence of_________.

• water

• carbon dioxide

• oxygen

• radiant energy

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