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Biology: Chapter 4.4
Chapter 4.4 Vocabulary
Term | Definition |
---|---|
Cell Wall | a rigid layer that lies outside the cell's plasma membrane |
Central Vacuole | a large, fluid-filled organelle that stores not only water but also enzymes, metabolic wastes, and other materials |
Plastid | organelles that, like mitochondria, are surrounded by a double membrane and contain their own DNA |
Chloroplast | these use light energy to make carbohydrates from carbon dioxide and water; contains a system of flattened, membranous sacs called thylakoids |
Thylakoid | a system of flattened, membranous sacs containing the green pigment chlorophyll |
Chlorophyll | a green pigment; the main molecule that absorbs light and captures light energy for the cell; can be found not only in plant cells but also in a wide variety of eukaryotic algae, such as seaweed |