| A | B |
| cell membrane | thin flexible covering on outside of cell; allows material into and out of the cell |
| cell wall | found only in plant cells; supports & protects the cell; made of cellulose |
| cytoplasm | jelly-like substance between the cell and nuclear membrane; moves & supports organelles |
| nucleus | "brain" of the cell; controls all activities of the cell |
| nuclear membrane | outer covering of the nucleus; allows materials into and out of the nucleus |
| nucleolus | "little nucleus"; where ribosomes are made |
| chromosomes | pass the traits of the old cell onto the new cell; found in the nucleus |
| endoplasmic reticulum | tube-like passageways that transport proteins |
| ribosomes | tiny structures where protein is made; found in the cytoplasm and on the endoplasmic reticulum |
| mitochondria | "powerhouse" of the cell where energy is made by respiration |
| vacuoles | storage tanks for food, water & waste |
| lysosomes | involved in digestion; common in animals, not in plants |
| chloroplast | found only in plant cells; contains chlorophyll; where food is made by photosynthesis |
| nuclearplasm | jelly-like substance found inside the nucleus |