| Name | Function | Structure (etc.) |
| control centre of cell; contains nucleoplasm which holds nucleolus and chromosomes | double membrane with nuclear pores to control entry/exit of materials; membrane present in Eukaryotes but not in Prokaryotes | |
| produces ribosomes | not membrane-bound; may be more than one in nucleus | |
| produce proteins (protein synthesis) | produced in nucleolus; migrate out to cytoplasm where they may be found free-floating or attached to ER (RER) | |
| receive proteins from ribosomes and transport them throughout cell; modify proteins (add sugar groups, etc.) | series of membrane channels connecting nucleus to cell membrane; studded with ribosomes (RER) or not (SER) | |
| receive proteins from ER and package them into vesicles (sacs) for export from cell or transport elsewhere in cell; modify proteins | stacks of flattened membranes attached to or near ER | |
| produce ATP via Matrix rxns and ETS (aerobic cell respiration) | often rod shaped with outer/inner membrane, matrix, cristae | |
| produce enzymes for degradation of bacteria, worn-out cell components; may fuse with vacuole and pour enzymes into it | membrane-bound | |
| store water and dissolved food, ions, bacteria, etc.; create turgor pressure in plant cells; receive enzymes from lysosome | membrane-bound | |
| produce spindle fibres used in mitosis; also produce flagella and cilia (which have microtubules) | rings of microtubules; occur in pairs at right-angles to each other | |
| supports all intracellular organelles | nucleoplasm is jellylike fluid inside nucleus; cytoplasm is jellylike fluid outside nucleus | |
| both used for locomotion | flagella is a long taillike structure; cilia are shorter and more numerous (usually); made of microtubules | |
| support structure for organelles (inner cell skeleton) | made of microtubules and microfilaments | |
| site of photosynthesis (in plant cells and green algae) | inner and outer membranes; thylakoids (discs) and stroma (jellylike, similar to matrix); contain chlorophyll and other photosynthetic pigments | |
| controls transport; provides shape/support for cell; site of attachment for hormones/neurotransmitters | fluid mosaic model (see notes) | |
| general class of organelles which includes chloroplasts (photosynthesis), amyloplasts (store starch), leucoplasts (store fat), etc. | membrane bound sacs |