Question

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

Explanation:

Chemical energy conversions in plant cells mainly involve photosynthesis (in chloroplasts) and cellular respiration (in mitochondria). Chloroplasts convert light energy to chemical energy (glucose). Mitochondria convert chemical energy in glucose to ATP. But the question is about “chemical energy conversions” in general. Chloroplasts are unique to plant cells (among the options) and are crucial for the initial conversion of light to chemical energy (a major chemical energy conversion process in plants). Endoplasmic reticulum is for protein and lipid synthesis. Ribosomes are for protein synthesis.

Answer:

chloroplasts