原生质体

例句：

1. 1. The study of plant cells is essential for understanding the structure and function of chloroplasts.
   研究植物细胞对于理解叶绿体的结构与功能至关重要。
2. 2. During photosynthesis, chloroplasts convert light energy into chemical energy stored in glucosemolecules.
   在光合作用过程中，叶绿体将光能转化为葡萄糖分子中的化学能。
3. 3. Chloroplasts are responsible for producing food for the plant's cells, which are then used to produce more chloroplasts.
   叶绿体负责为植物细胞生产食物，这些细胞再利用这些食物来产生更多的叶绿体。