Which term describes the process that requires oxygen?

Which term describes the process that requires oxygen?

• A. Anaerobic
• B. Aerobic
• C. Substrate
• D. Protease enzyme

Answer: (B)

Aerobic is the term for processes that require oxygen. In cellular respiration, oxygen acts as the final electron acceptor in the mitochondrial electron transport chain, allowing electrons to flow and producing a large amount of ATP per glucose. This reliance on oxygen is what defines the process as aerobic. By contrast, anaerobic refers to processes that occur without oxygen, so it isn’t describing the need for oxygen here. A substrate is simply the molecule an enzyme acts on, and a protease enzyme is a type of enzyme that digests proteins, not a description of a process that uses oxygen.

Aerobic is the term for processes that require oxygen. In cellular respiration, oxygen acts as the final electron acceptor in the mitochondrial electron transport chain, allowing electrons to flow and producing a large amount of ATP per glucose. This reliance on oxygen is what defines the process as aerobic. By contrast, anaerobic refers to processes that occur without oxygen, so it isn’t describing the need for oxygen here. A substrate is simply the molecule an enzyme acts on, and a protease enzyme is a type of enzyme that digests proteins, not a description of a process that uses oxygen.