Which term means the physical and chemical processes that occur within a living cell necessary for life?

Which term means the physical and chemical processes that occur within a living cell necessary for life?

• A. Metabolism
• B. Respiration
• C. Rhythm
• D. Rate

Answer: (A)

Metabolism is the set of chemical and physical processes inside living cells that keep life going. It includes breaking down nutrients to release energy and using that energy to build and maintain the cell’s structures. Because it covers all the chemical reactions necessary for life, metabolism is the right term for these essential cellular activities. Respiration is a specific energy-producing pathway within metabolism, not the entire idea, while rhythm and rate describe patterns or speeds rather than the full range of cellular processes.

Metabolism is the set of chemical and physical processes inside living cells that keep life going. It includes breaking down nutrients to release energy and using that energy to build and maintain the cell’s structures. Because it covers all the chemical reactions necessary for life, metabolism is the right term for these essential cellular activities. Respiration is a specific energy-producing pathway within metabolism, not the entire idea, while rhythm and rate describe patterns or speeds rather than the full range of cellular processes.