The Renaissance was an influential cultural movement which brought about a period of scientific revolution and artistic transformation, at the dawn of modern European history. It marks the transitional period between the end of the Middle Ages and the start of the Modern Age.
1 cell wall Outer structure which provides support and prevents the cell from bursting by the uptake of water by osmosis; plant, fungal and bacterial cell walls have different structures and chemical compositions.  chloroplast Contains the green pigment chlorophyll; the site of photosynthesis.
A: The cell wall of plants is a tough, yet flexible layer that surrounds the cell membrane. It has many functions, but its main function is to give the plant cell rigidity and strength. Cell walls of plants also help to determine and maintain the shape and structure of plant cells.