click below
click below
Normal Size Small Size show me how
Cell organelles
Cell organelles vocabulary
Term | Definition |
---|---|
cell wall | rigid outside structure of plasma membrane; protection and support for plants |
chromatin | substance found in eukaryotic chromosomes that consist of DNA tightly coiled around histones |
nucleolus | located within the nucleus, makes proteins |
ribosomes | the site of protein synthesis |
cytoplasm | clear; gelatinous fluid inside the cell |
endoplasmic reticulum | the site of chemical reactions in eukaryotic cell; transports proteins lipid components of the cell membrane are assembled here |
golgi apparatus | sort proteins and packages them into vesicles outside of the cell |
vacuole | a sac used to store food, enzymes and other needed materials; may also store waste |
lysosome | contain digestive enzymes; may digest worn out organelles, food, viruses, bacteria |
chloroplast | organelle found in cells of plants that captures light energy and produces food to store for a later time |
plastid | plant organelle used for storage |
chlorophyll | traps light energy; pigment that gives leaves and stems their green color |
mitochondrian | membrane organelle that breaks down in plants and animals that transform energy ; powerhouse of the cell |
cytoskeleton | composed of tiny rods and filaments that gives the cell its shape and internal organization |
microtubule | thin, hollow cylinders made of protein that form framework for the cell |
cilia | short, hair-like projections used for locomotion; wave-like motion |
flagella | long-hair like projections used for locomotion.whip-like motion |
cell membrane | thin flexible barrier that surrounds all cells; allows substances to leave and enter the cell |
nucleus | controls the activities within the cell |
cell | basic unit of all living things |
cell theory | fundamental concept of biology that states all living things are made of cells, cells are the basic units of structure and function in living things and new cells are produced from existing cells |
prokaryote | do not enclose their genetic material within a nucleus |
eukaryote | encloses genetic material within a nucleus |
organelle | specialized structure that performs important cellular functions within a cell |