| Term | Definition |
| chloroplast | organelle in which photosynthesis occurs |
| mitochondrion | organelle found in all eukaryotic cells; site of cellular respiration |
| components of cytoskeleton | actin filaments, intermediate filaments, microtubules |
| actin filaments | part of cytoskeleton involved in muscle contraction, movement of pseudopods, movement of microvilli |
| intermediate filaments | part of cytoskeleton that supports nuclear envelope, joins cells together, and strengthens hair |
| microtubules | part of cytoskeleton; hollow cylinders; help cause movement of organelles within cell |
| centrioles | short cylinders made of microtubules; help organize microtubles; may organize cilia and flagella |
| cilia | short, hairlike projections of cell membrane, made of microtubules; aid in cell movement |
| flagellum | a long projection of cell membrane, composed of microtubules; sperm cells have this |
| centrosome | the microtubule organizing center of the cell |
| photosynthesis (general reaction) | carbon dioxide + water + sunlight --> glucose + oxygen |
| cellular respiration (general reaction) | glucose + oxygen --> carbon dioxide + water + energy (ATP) |