| A | B |
|---|
| Respiration | The process by which cells break down simple food molecules to release the energy they contain. |
| Chlorophyll | A green pigment found in the chloroplasts of plants, algae, and some bacteria. |
| Photosynthesis | The process by which plants and some other organisms capture the energy in sunlight and use it to make food. |
| Heterotroph | An organism that cannot make its own food. |
| Fermentation | The process by which cells break down molecules to release energy without using oxygen. |
| Stomata | Small openings on the underside of a leaf through which oxygen and carbon dioxide can move. |
| Pigment | A colored chemical compound that absorbs light. |
| Autotroph | An organism that makes it own food. |
| Cancer | A disease in which some body cells grow and divide uncontrollably, damaging the parts of the body around them. |
| Interphase | The stage of the cell cycle that takes place before cell division occurs. |
| Chemotherapy | The use of drugs to treat diseases such as cancer. |
| Chromosome | A doubled rod of condensed chromatin; contains DNA that carries genetic information. |
| Cell cycle | The regular sequence of growth and division that cells undergo. |
| Cytokinesis | The final stage of the cell cycle, in which the cell‘s cytoplasm divides, distributing the organelles into each of the two new cells. |
| Mutation | A change in a gene or chromosome. |
| Replication | The process by which a cell makes a copy of the DNA in its nucleus. |
| Tumor | A mass of abnormal cells that develops when cancerous cells divide and grow uncontrollably. |
| Mitosis | The stage of the cell cycle during which the cell’s nucleus divides into two new nuclei and one copy of the DNA is distributed into each daughter cell. |
