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BioChap1-3
Rowan Bio1
| Question | Answer |
|---|---|
| Hierarchy of Organization | atoms make cells, cells make tissue, & tissue makes organs |
| Tissue | identical cells with identical function |
| Population | nuumber of the same species |
| Community | the species living in one area |
| Emergent Properties | new properties which emerge as you proceed from one level to the next |
| Diffusion | movement of substances from high to low concentration |
| Thermodynamics | study of energy transformations |
| What is another name for wasted energy? | Heat |
| Cell Theory | cells come from other cells, they are the smallest unit, organisms must have cells |
| systematic observations | one after another |
| Laws of Thermodynamics | energy cannot be made or destroyed, every energy transformation increases disorder in the universe |
| Chemical bonding uses what particle? | electrons |
| Isotopes | when an atom of an element has more or less neutrons than the common, are unstable and want to be something else |
| atoms combine to form... | molecules |
| What orbits the atomic nucleus? | electrons (-) |
| Ionic bonds | weak bonds, easily broken by H2O |
| Covalent bonds | are polar (equal sharing) or non polar (unequal sharing) |
| Properties of water | cohesive, adhesive, resists change in temp, high heat of vaporization, expands when frozen |
| Surface Tension | creates film on water |
| Kenectic energy | molecular motion, generates heat |
| Heat | total kinectic energy measure in calories |
| temperature | measure of the average kinectic energy |
| calorie | 1 calorie = 1 g of H2O to raise temp 1 C |
| Density | measure of molecules for a specific bond (fewer molecules = less dense) |
| Concentration Gradient | there is more on one side of the cell than the other |
| Hydrophobic | not attracted to H20 |
| Hydrophillic | attracted to H20 |
| Dissociation | seperation of charged particles when placed in water |
| Acids are... | proton donors |
| Bases are... | proton acceptors |
| Osmosis | diffusion of H2O across a semi permeable membrane |
| cell membrane | controls substances leaving or entering; maintains concentration gradience |
| Hypotonic Hypertonic Isotonic | more H20, less dots less H20, more dots equal dots & H2O |
| 4 classes of Biochemical Compounds | Carbs, lipids, protein, DNA/RNA |
| isomer | a different form of the same molecule |
| enantomers | mirror images of each other |
| geometric isomers | variation in arragement about a double bond |
| Polymerization | process of making polymers |
| Monomier | basic units |
| polymer | completely organic compound |
| Carbohydrates | organic molecules made of sugars & their polymers |
| Monosacchrides | simplest sugars |
| glycosidic linkage | chemical bond between two monosacchrides |
| Saturated fat | no double bonds, many hydrogen, solid at room temp, most animal fats |
| Unsaturated fat | double bonds, liquid at room temp, most plant fats |
| Cell recognition | ability of a cell to determine if other cells are the same or different |
| Cell markers | vary between species, individuals of the same species, cells of the same individual |
| Charged ions... | never cross the membrane |