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.
Plant cells have chloroplasts for photosynthesis, a vacuole and cell wall. Cell membranes allow certain substances into and out of the cell. Mitochondria provide energy from respiration for the cell, and the cell wall provides structure and is freely permeable. Yeast cells, algae and bacteria have cells walls.