1. Why is the study of cells important? 2. What are the two major regions of a plant cell? Discuss each in terms of structure and function. 3. Why do plant cells have intercellular spaces? What is their function? 4. Describe the structure, function and location in the cell of the following organelles: plasma membrane, nucleus, ribosomes, endoplasmic reticulum, Golgi, glyoxysome, peroxisome, mitochond. oleosomes, microtubules, microfilaments..