prokaryotic cells
found in domains bacteria and archaea
single circular chromosome found in nucleoid
no membrane bound organelles
ribosomes
plasma membrane
forms boundary for cell; selectively permeable
what is the plasma membrane made up of?
phospholipids, proteins, carbohydrates
endoplasmic reticulum
network of membranous sacs & tubes; active in membrane synthesis & other synthetic/metabolic processes; has rough & smooth regions
nuclear envelope
double membrane enclosing the nucleus, perforated by pores, continuous with ER
nucleolus
nonmembranous structure involved in production of ribosomes; nucleus has 1 or more of these
chromatin
material consisting of dna & proteins; visible in a dividing cell as individual condensed chromosomes
ribosomes
completes that make proteins; free in cytosol or bounded to rough ER/nuclear envelope
golgi apparatus
organelle active in synthesis, modification, sorting, and secretion of cell products
lysosome
digestive organelle where macromolecules are hydrolyzed
mitochondrion
organelle where cellular respiration occurs & most ATP is generated
central vacuole
prominent organelle in older plant cells; functions include storage, breakdown of waste products, and hydrolysis of macromolecules; enlargement of this is a major mechanisms of plant growth