Question 26

The primary purpose of cellular respiration is to convert nutrients to energy.

Cellular respiration is a biochemical process that allows cells to convert nutrients, particularly glucose, into usable energy in the form of ATP. This energy is essential for various cellular functions and maintaining life.

A) To copy DNA

This option is incorrect because copying DNA is a process associated with cell division and replication, not cellular respiration. Cellular respiration does not involve the duplication of genetic material but focuses on energy production.

B) To facilitate breathing

While breathing is related to gas exchange and is vital for supplying oxygen for cellular respiration, it is not the primary purpose of cellular respiration itself. Cellular respiration occurs at the cellular level, converting nutrients to energy rather than being directly about the act of breathing.

C) To convert nutrients to energy

This option is correct as the primary purpose of cellular respiration is indeed to convert nutrients into energy. The process involves breaking down glucose and other organic molecules to produce ATP, which powers various cellular activities.

D) To enable cell division

This option is incorrect because enabling cell division pertains to processes like mitosis and meiosis, which involve the replication and distribution of DNA. Cellular respiration is unrelated to the mechanisms that allow cells to divide.

Conclusion

The correct answer, C, highlights the fundamental role of cellular respiration in energy production, which is crucial for all cellular processes. Other options either misrepresent the function of cellular respiration or pertain to different biological processes, making them unsuitable in this context.