Review for Science Test
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25 terms
Terms | Definitions |
|---|---|
 Define Photosynthesis | The process by which cells capture energy in sunlight and use it to make food. |
| Write the balanced chemical equation for photosynthesis. | 6CO2 + 6H2O------ C6H12O6 + 602 (light) |
| Define the terms autotroph and neterotroph | hetrotroph-cannot make their own food autotroph-can make its own food |
| Define respiration | The porcess by which cells "with draw" energy from gluclose |
| Write the blanced chemical equation for respiration | C6H12 + 6OS-------6CO2 + 6H2O + energy (ATP) |
| Describe where in the cell respiration occurs | it occurs in the cytoplasm and the mitochondra |
| define fermintation | An energy releasing process that does not require oxygen |
| List three reasons why the cell cycle is important for your body | Examples: let's you grow, keeps your cells from dying, repairs cuts and other wounds |
| List the three stages of the cell cycle | Interphase, Mitosis, Cytokinesis |
| State three events that occur during the first stage of the cell cycle | Growth, DNA Replication, Preparation for Division |
| Define replication in reference to DNA | The cell makes a copy of it's DNA inside its nucleaus |
| Describe the structure of DNA | The sructure of DNA is much like a ladder that is twisted with matching chemicals |
| List the four nitrogen bases according to their paring pattern | Thymine-Adenine Guanine-Cytosine |
| Name the four phases of the second stage of the cell cycle, which is called Mitosis | Prophase, Metaphse, Anaphase, Teophase |
| Explain what happens during the thrid stage of the cell cycle, called Cytokinesis | During Cytokinesis, the cytoplasm divides, distributing the organelles into each of the two ne cells |
| Define cancer | is a disease in which cells grow uncontrollably, damaging cells and the rest of the body. |
| Describe how cancer begins | DNA in the cell gets damaged causing a mutation and the cell does not die out |
| Explain how cancer spreads | one cell develops and a tumor forms then the cells enter the blood stream spreadind all over the body |
| List three ways cancer can be treated | radiation, surgery, chemotherapy(drugs) |
| List two health habits that can prevent cancer | not smoking eating healthy |
| carcinogen | something that causes cancer |
| Biopsy | remove part of tissuse and test it to see if it is benign or malignant |
| malignant | cancerous tumor |
| benign | non-cancerous tumor |
| metastasis | cancer spreading through the bloodstream to other parts of the body |
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