Science exam study 1 Word Scramble
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| Term | Definition |
| Alkali Metals | • Group 1 • Highly reative metals |
| Alkali earth metals | • Group 2 • Reactive metals |
| halogens | • Group 17 (or 7) • Non-metals • One of the most reactive groups |
| Noble gases | • Group 18 (or 8) • Most stable • Rarely reactive |
| hydrogen | • The group of 1 • Placed on metals side due to similar properties but is a non metal |
| Stage 1 Interphase | • The longest stage; during which a cell carries out its regular functions • DNA is in long thin strands Near the end DNA is duplicated and more organelles are formed |
| Phase 1 Prophase | • DNA condenses into chromosomes, which consists 2 identical sister chromatids, held together by a centromere • The nuclear membrane breaks down • Spindle finders are visible |
| Stage 2 Mitosis | Phase 1 Prophase Phase 2 Metaphase Phase 3 Anaphase Phase 4 Telophase |
| Phase 2 Metaphase | • Chromosomes line up along the center of the cell • Spindle fibers are visible |
| Phase 3 Anaphase | • The centromeres split, sister chromatids separate into daughter chromosomes and begin to move to opposite ends of the cell, being pulled to the spindle fibers |
| Phase 4 Telophase | • Daughter chromosomes stretch out and become thinner- no longer visible • New nuclear membranes form |
| Stage 3 Cytokinesis | • Final stage of cell division • Cytoplasm divides into 2 identical daughter cells |
| Tissue | A collection of similar cells that perform a particular, but limited, function |
| Epithelial tissue | Thin sheet of cells covering surfaces and lining organs |
| Muscle tissue | Bundles of long cells (muscle fibers) that can shorten (contract) |
| Connective tissue | Various types of cells & fibers held together by a matrix (solid/liquid/gel) |
| Nerve tissue | Long thin cells w/ fine branches that can conduct electrical impulses |
| 4 major types of tissue | Epithelial tissue Muscle tissue Connective tissue Nerve tissue |
| Produces bile | liver system: Digestive (accessory organ) |
| Carries oxygen to cells | Red blood cells system: Circulatory |
| Relaxes and contracts to cause inhalation and exhalation | Diaphragm: Musculoskeletal |
| Holds and churns food | Stomach : Digestive |
| Fight infection | White blood cells: Circulatory |
| Releases mucus that moistens the air | Epithelial cells called cilia: Respiratory |
| Have very thin walls to allow diffusion of oxygen and carbon dioxide; are surrounded by capillaries | Alveoli: Respiratory |
| Absorbs water from undigestible food | Large intestine (colon): Digestive |
| Allows red blood cells to pass through single file | Capillaries : Circulatory |
| Performs mechanical digestion | Mouth: Digestive |
| Carry blood back to the heart | Veins: Circulatory |
| Supported by C-rings of cartilage | Trachea: Respiratory |
| Muscular tube that uses peristalsis | Esophagus: Digestive |
| Carry blood away from the heart | Arteries: Circulatory |
| Has acid to kill bacteria | Stomach: Digestive |
| Have thick muscular walls to withstand pressure | Arteries: Circulatory |
| Produces insulin | Pancreas: Digestive |
| Tiny cells that help in clotting | Platelets: Circulatory |
| Stores and secretes bile | Gall bladder: Digestive |
| Most digestion occurs here | Small intestine: Digestive |
| The Shoot System | · Conducts photosynthesis and produces flowers for sexual reproduction · Three main parts: leaf, flower and stem |
| Dermal tissue system | forms the outer surface |
| Vascular tissue system | responsible for transportation of water & minerals through plant |
| Ground tissue system | make up all other structures |
| photosynthesis equation | carbon dioxide + water —> glucose + oxygen + water. chemical equation 6CO2 + 6H2O —> C6H12O6 + 6O2 |
| how do plants guard against water loss | Through the stomata/guard cells (close when water is low), and the cuticle (waxy to prevent water loss) |
| LAWS of reflection: | • The angle of reflection (r) is always equal to the angle of incidence • All the light that reaches our eyes initially came from a light source • Light will always take the fastest route |
| speed of an object through a medium equation | v=c/n |
| Index of refraction equation | N=c/v or [n=sine ⦣I/sine ⦣R] |
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MooshroomsRCool
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