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Chapter 2 test vocab
Chapter 2 vocab
Question | Answer |
---|---|
Photosynthesis | The process by which plants and some other organisms capture the energy in sunlight and use it to make food. |
Pigment | A colored chemical compound that absorbs light |
Chlorophyll | green pigment found in the chloroplasts of plants, algae, and some bacteria |
Stomata | Small openings on the underside of a leaf through which oxygen and cabon dioxide can move. |
Heterotroph | An organism that cannot make its own food. |
Autotroph | An organism that makes its own food. |
Respiration | The process by which cells break down simple food molecules to release the energy they contain. |
Fermentation | The process by which cells break down moelcules to release energy without using oxygen. |
Cell Cycle | The regular sequence of growth and division that cells undergo. |
Interphase | The stage of the cell cycle that takes place before cell division occurs; during this stage, the cell grows, copies its DNA and prepares to divide. |
Replicaation | The process by which cells make a copy of the DNA and its neclus. |
Mitosis | The stage of the cell cycle during which the |
Chromosome | A doubled rod of condesened chromatin; contains DNA that carries genetic information. |
Chromatid | One of the identical rods of a chromosome. |
Cytokinesis | The final Stage of the cell cycle , in which the cell's cytoplasm divides, distribution organelles into each of the new cells. |
Cancer | A disease in which some body cells grow and divide uncontrollably , damageing the parts of the body around. |
Mutation | A change in a gene or chromosomes. |
Tumor | A mass of abnormal cells that develops when cancerous cells divide and grow uncontrollably. |
Chemothearpy | The use of drugs to kill cancer cells. |