OCR General Certificate of Secondary Education (GCSE) Biology Practice Exam

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Which cellular component is involved in anaerobic respiration?

  1. Ribosomes

  2. Cytoplasm

  3. Cell wall

  4. Nucleus

The correct answer is: Cytoplasm

Anaerobic respiration occurs in the cytoplasm of cells, where glucose is converted into energy without the use of oxygen. This process involves several enzymes and reactions that take place in the liquid medium of the cytoplasm. In contrast, ribosomes are involved in protein synthesis, the cell wall provides structure and protection to the cell, and the nucleus houses genetic material and is involved in the regulation of gene expression. These components do not participate directly in the metabolic processes of anaerobic respiration. By emphasizing the cytoplasm’s role as the location for anaerobic respiration, it becomes clear why this choice is associated with the process.

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