Question

1. chemical energy conversion within a plant cell would be limited most severely by the removal of the cells - endoplasmic reticulum ribosomes mitochondria chloroplasts

Explanation:

Mitochondria are the power - houses of the cell responsible for cellular respiration which converts chemical energy (in the form of glucose) into ATP. Chloroplasts are mainly for photosynthesis in plant cells but not the main site for general chemical energy conversion like mitochondria. Endoplasmic reticulum is involved in protein and lipid synthesis, and ribosomes are for protein synthesis. So, removal of mitochondria would most severely limit chemical energy conversion in a plant cell.

Answer:

C. mitochondria