Across
- 1. found in plants gives pigment
- 4. basic discrete unit of heredity
- 5. process that occurs when oxygen is present
- 6. a threadlike gene carrying structure
- 8. protein coat which reproduces within a host cell basic functional unit of living organisms
Down
- 2. individual living thing
- 3. life observable only under a microscope
- 5. single cell organisms with no cell membrane
- 7. a study of life