Introduction to Biology
Chemistry of Life
Properties of Water
Terms : Hide Images
| 197314030 | Population | A localized group of organisms that belong to the same species | |
| 197314033 | Hydrogen bond | When the slight negative charge at one end of one water molecule is attracted to the slight positive charge of another water molecule | |
| 197314035 | Hydrophobic | Nonpolar substances like oils that repel water molecules | |
| 197314037 | Buffer | A solution that prevents sudden changes in pH | |
| 197314039 | Atomic mass | Number of protons plus neutrons for an element | |
| 197314040 | Atomic number | Number of protons or electrons an element contains | |
| 197314041 | Dalton | A unit of mass equivalent to one proton or one neutron, also known as atomic mass unit (amu) | |
| 197314042 | Isotopes | Atoms of the same element that contain different numbers of neutrons | |
| 197314043 | Covalent bond | Chemical bond formed when two atoms share valence electrons | |
| 197314044 | Nonpolar covalent bond | Chemical bond formed when two atoms that are equally electronegative share valence electrons | |
| 197314045 | Polar covalent bond | Chemical bond formed when two atoms that have different electronegativities share valence electrons | |
| 197314046 | Van der Waals interactions | Form when electrons are not equally distributed around a molecule | |
| 197314047 | Compound | A molecule consisting of two or more types of atoms in definite proportions (ex. H20) | |
| 197314048 | Trace elements | Elements that are necessary for life, but only in very small amounts | |
| 197314052 | Structure | The physical makeup of a biological component | |
| 197314053 | Function | The job performed by a biological component | |
| 197314054 | Cell | The smallest unit that can perform all the functions of life | |
| 197314055 | Prokaryotic | A cell that does not have a nucleus or membrane-bound organelles | |
| 197314056 | Eukaryotic | A cell that has a nucleus and membrane-bound organelles | |
| 197314057 | Positive feedback | Type of feedback system where an accumulation of the end product speeds up the reaction (ex. mammalian labor and birth) | |
| 197314058 | Negative feedback | Type of feedback system where an accumulation of the end product slows down the reaction (ex. temperature regulation) | |
| 197314059 | Taxonomy | The science of naming and classifying organisms | |
| 197314060 | Bacteria | Domain of prokaryotic organisms that are found everywhere on Earth | |
| 197314061 | Archaea | Domain of prokaryotic organisms that are often found in extreme environments on Earth | |
| 197314062 | Protista | Kingdom of microorganisms that can be autrotrophic or heterotrophic | |
| 197314063 | Fungi | Kingdom of eukaryotic organisms that absorb nutrients from their environment | |
| 197314064 | Animalia | Kingdom of multicellular eukaryotic heterotrophs that acquire nutrients by consuming other organisms | |
| 197314065 | Plantae | Kingdom of eukaryotic organisms that create their own food using sunglight, water, and CO2 | |
| 197314066 | Eukarya | Domain of organisms that have nuclei and membrane-bound organelles | |
| 197314069 | Evolution | The idea that organisms living on Earth today are the modified descendants of common ancestors | |
| 197314070 | Biosphere | Anywhere on Earth where life exists | |
| 197314071 | Theory | An explanation that is broad in scope, generates new hypotheses, and is supported by a large body of evidence | |
| 197314072 | Model | A scientific representation of a natural phenomenon | |
| 197314073 | Matter | Anything that takes up space and has mass | |
| 197314074 | Element | A substance that cannot be broken down to another substances by chemical reactions | |
| 197314075 | Atom | The smallest unit f matter that still retains the properties of an element | |
| 197314076 | Proton | Subatomic particle with a positive charge and a mass of 1 dalton | |
| 197314077 | Neutron | Subatomic particle with no charge and a mass of 1 dalton | |
| 197314078 | Electron | Subatomic particle with a negative charge and a mass of 1/2000 of a Dalton | |
| 197314079 | Valence electrons | Electrons found in the outermost energy shell of an atom that are responsible for the reactivity of an atom | |
| 197314083 | Cation | Positively charged ion | |
| 197314084 | Cohesion | The attract between two of the same molecules | |
| 197314085 | Adhesion | The attraction between two different molecules | |
| 197314086 | Specific heat | The amount of heat that must be absorbed for 1 g of that substance to change its temperature by 1 degree celcius | |
| 197314088 | Solution | A liquid that is homogeneous mixture of substances | |
| 197314089 | Solvent | The dissolving agent of a solution | |
| 197314090 | Solute | The substance that is dissolved in a solution | |
| 197314091 | Hydrophyllic | A substance that can be dissolved in water | |
| 197314092 | Anion | Negatively charged ion | |
| 197314093 | Ion | An atom with a positive or negative charge | |
| 197314094 | Controlled experiment | An experiment designed to compare two groups that differ only by one factor | |
| 197314095 | Ecosystem | All the living and nonliving things in a particular area that interact to make life possible | |
| 197314096 | Community | All the living things in an ecosystem | |
| 433588937 | Data | Recorded observations | |
| 433588938 | Qualitative | Data that uses descriptive words (ex. color) | |
| 433588939 | Quantitative | Data that uses numbers (ex. height) | |
| 433588940 | Hypothesis | Tentative answer to a scientific question that must be testable and falsifiable | |
| 433588941 | Biology | The scientific study of life | |
| 433588942 | Potential energy | The energy that matter has because of its location or structure | |
| 433588943 | Chemical reaction | The making and breaking of chemical bonds | |
| 433588944 | Reactants | The starting molecules of a chemical reaction | |
| 433588945 | Products | The final molecules of a chemical reaction | |
| 433588946 | Chemical equilibrium | When the forward and reverse reaction rates are equal | |
| 433588947 | Polarity | When the opposite ends of a molecule have slightly different charges | |
| 433588948 | Molarity | The number of moles of a solute per liter of solution | |
| 433588949 | Acid | A substance that increases the H+ concentration of a solution and has a pH of less than 7 | |
| 433588950 | Base | A substance that reduces the H+ concentration of a solution and has a pH of greater than 7 |
