Multiple Choice
During the Krebs Cycle, is there a net gain or loss of ATP when citrate is transported across the mitochondrial membrane?
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3. Energy & Cell Processes
Introduction to Cellular Respiration
Multiple Choice
Which process occurs when the demand for ATP outpaces the oxygen supply in cells?
A
Aerobic respiration
B
Photosynthesis
C
Fermentation
D
Glycolysis
Verified step by step guidance1
Understand the context: Cells require ATP for energy, and oxygen is typically used in aerobic respiration to produce ATP efficiently.
Identify the problem: When oxygen supply is insufficient, cells must find an alternative way to produce ATP.
Recognize the process: Fermentation is the process that occurs when oxygen is limited, allowing cells to continue producing ATP anaerobically.
Differentiate between processes: Aerobic respiration requires oxygen, while fermentation does not. Photosynthesis is unrelated as it occurs in plants to produce glucose, not ATP directly.
Conclude the explanation: Fermentation allows cells to produce ATP without oxygen, albeit less efficiently than aerobic respiration.
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