| A | B |
|---|
| amyloplast | starch storage vacuole in plants |
| cell | smallest independent unit of life |
| cell wall | porous support structure found outside cell |
| centriole | short cylinder of microtubules found at the center of a centrosome in animals |
| chloroplast | site of photosynthesis in plants and protists |
| chromoplast | pigment storage vacuoles in plants |
| chromosome | structure composed of DNA and associated proteins |
| cilia | short projections from the cell surface with a core of microtubules that perform a beating motion |
| cytoplasm | the fluid and organelles inside the plasma membrane of a cell |
| cytoskeleton | a network of protein filaments that give the cell structure and directed movement |
| cytosol | fluid that contains the cellular organelles inside the plasma membrane |
| DNA | double stranded nucleic acid that is the cell's heritable material |
| endoplasmic reticulum | maze-like network of membranes continuous with nuclear envelope |
| rough endoplasmic reticulum | site of manufacture of membrane-bound or secreted proteins |
| smooth endoplasmic reticulum | involved with lipid synthesis and calcium ion storage |
| eukaryote | an organism with cells that have a membrane bound nucleus |
| prokaryote | an organism with cells that do not have a membrane-bound nucleus |
| flagellum | a long whiplike structure capable of moving cells using a beating motion |
| Golgi apparatus | stack of membranes that are the site of oligosaccharide modification and intracellular protein sorting |
| lysosome | membrane-bound organelle containing digestive enzymes |
| microfilament | smallest filament found in the cytoskeleton; composed of actin |
| microtubules | largest filaments of cytoskeleton; often used to control movements of and in cells |
| mitochondrion | organelle of eukaryotes with double-membrane, site of oxidative phosphorylation |
| nuclear envelope | system of dual membranes perforated by nuclear pores surrounding a eukaryote's DNA |
| nucleoid | structure of prokaryotes that contains DNA and associated proteins |
| nucleolus | dark staining area of nucleus that is site of rRNA synthesis |
| nucleus | eukaryotic organelle that contains the cellular DNA |
| organelle | a small compartment of a cell that carries out a specific biochemical function |
| pilus | prokaryotic organelle used for attachment |
| peroxisome | organelle used for peroxide metabolism |
| plasma membrane | fluid mosaic of phospholipids and protein serving as outer limit of cell |
| ribosome | particle composed of RNA and protein that catalyzes protein synthesis |
| vesicle | small membranous organelle found in the cytoplasm; used for intracellular transport |
