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4.4 Biology
Term | Definition |
---|---|
cell wall | a ridged structure that surrounds the cell membrane and provides support to the cell |
central vacuole | a large cavity or sac that is found in plant cells or protozoans and that contains air of partially digested food |
plastid | an organelle of plant cells that contains specific substances and performs specific functions for the cell |
chloroplast | an organelle found in plant and algae cells where photosynthesis occurs |
thylakoid | a membrane system found within chloroplasts that contains the components for photosynthesis |
chlorophyll | a green pigment that is present in most plant cells, that gives plants their characteristic green color, and that reacts with sunlight, carbon dioxide, and water to form carbohydrates |