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Stack #4194519
organelles
Term | Definition |
---|---|
cell membrane | phospholipid bilayer with embedded protein molecules. controls which substances may enter or leave a cell and maintains cell integrity |
nucleus | a large circular organelle surrounded by a double membrane which has many pores to allow movement of materials in and out of nucleus. holds genetic material |
nucleolus | small circular section section within the nucleus. holds RNA which plays a role in protein synthesis |
mitochondria | rod shaped with an external membrane and cristae to increase surface area. converts glucose to a more usable form of energy (ATP) in the process of cellular respiration |
endoplasmic reticulum | a highly folded membrane structure that is continuous with the nuclear membrane. rough has ribosomes and where protein synthesis occurs. smooth involved in lipid metabolism |
ribosomes | found on rough ER or free floating. function in the translation phase in the synthesis of proteins. ovary cells producing hormones |
golgi apparatus | flat plate like sacs with surrounding vesicles. package, modify, store and secrete cellular products |
centrioles | composed of 2 sets of microtubles set at right angles of each other. organise formation of spindles |
lysosomes | vesicles full of digestive enzymes. destruction of foreign bodies |