Question 7

Cells can convert nutrients to energy

Cellular respiration occurs primarily because cells need to convert nutrients into usable energy. This process enables cells to perform essential functions necessary for survival and growth.

A) Cells can copy DNA

While DNA replication is crucial for cell division and maintaining genetic information, it is not the primary reason for cellular respiration. Cellular respiration focuses on energy production, not genetic material duplication.

B) Cells can breathe

Although respiration in a broader sense involves gas exchange, cellular respiration specifically refers to the biochemical process of breaking down nutrients to release energy. Thus, this option is misleading as it conflates the concept of breathing with energy metabolism.

C) Cells can convert nutrients to energy

This option accurately describes the primary function of cellular respiration. Through this process, cells break down glucose and other nutrients, ultimately converting them into adenosine triphosphate (ATP), which is the energy currency of the cell.

D) Cells can divide

Cell division is a separate biological process vital for growth and reproduction. While energy from cellular respiration may support cell division, the act of dividing itself is not the reason cellular respiration occurs.

Conclusion

The rationale behind cellular respiration is fundamentally tied to the conversion of nutrients into energy, making option C the correct answer. Other options either misrepresent the purpose of cellular respiration or pertain to different cellular functions, underscoring the necessity of energy production for cellular activities.