click below
click below
Normal Size Small Size show me how
Biology Chapter 4-3
Term | Definition |
---|---|
Phospholipid Bilayer | double layer of phospholipids that makes up plasma and organelle membranes |
chromosome | in a eukaryotic cell one of the structure in the nucleus, that are made up of DNA and protein; in a prokaryote cell- main ring of DNA |
Nuclear Envelope | double membrane that surrounds the nucleus of a eukaryote cell |
Nucleolus | part of eukaryote nucleus where ribosomal RNA is synthesized |
Ribosome | cell organelle composed of cell RNA and protein; the site of protein synthesis |
Mitochondrion | in eukaryotic cells, the cell organelle that is surrounded by two cell membranes and that is the site of cellular respiration which produces ATP |
Endoplasmic Reticulum | system of membranes that is found in a cells cytoplasm and that assists in the production, processing, and transport of proteins and in the production of lipids |
Golgi Apparatus | cell organelle that helps make and package materials to be transported out of the cell. |
Lysosomes | cell organelle that contains digestive enzymes and that buds from the Golgi apparatus |
Cytoskeleton | the cytoplasmic network of protein filaments and tubes that play an essential role in cell movement, shape, and division |
microtubule | one of the small, tubular fibers composed of the protein tubulin that are found in the cytoplasm of eukaryotic cells that compose the cytoskeleton, and that play a role in cell structure and movement |
microfilament | fiber found in eukaryotic cells that is composed mainly of the protein actin and that has a role in cell structure and movement |
cilium | hair like structure arranged in tightly packed rows that projects from the surface of some cells. |
flagellum | long, hair like structure that grows out of a cell and enables the cell to move |
centriole | organelle that is composed of two short microtubules at right angles to each other and that has an active role in mitosis |