| A | B |
|---|
| cilium | outward from surfaces of certain cells |
| cell membrane | thin envelope that forms outermost limit of a cell |
| cytoplasm | contents of a cell surrounding is nucleus |
| golgi apparatus | a cytoplasmic organelle that functions in preparing cellular products for secretion |
| nuclear envelope | thin double layered membrane that surrounds nucleus |
| nucleus | cellular organelle that is enclosed by a double layered porous membrane and contains DNA, the dense core of an atom that is composed of protons and neutrons |
| nucleolus | small structure that occurs within the nucleus of a cell and contains RNA and proteins |
| chromatin | nuclear material that gives rise to chromosomes during mitosis |
| centrioles | cellular organelle that functions in the organization of the spindle during mitosis |
| mitochondrion | cytoplasmic organelle that contains emzymes responsible for aerobic respiration |
| lysosome | cytoplasmic organelle that contains digestive enzymes |
| microtubule | hollow rod found in the cytoplasm of cells |
| ribosomes | cytoplasmic organelle that functions in the synthesis of proteins |
| smooth endoplasmic reticulum | lacks ribosomes |
| rough endoplasmic reticulum | contain ribosomes |
