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Biology 1st semester
| Question | Answer |
|---|---|
| group in an experiment that is exposed to the same conditions as the experimental group except for one independent variable | control group |
| evidence; information gathered from observations | data |
| possible explanation for a set of observations or possible answer to a scientific question | hypothesis |
| part of the earth in which life exists including land, water, and air or atmosphere | biosphere |
| a group of similar organisms that can breed and produce fertile offspring | species |
| one of the several forms of a single element, which contains the same number of protons but different numbers of neutrons | isotope |
| substance formed by the chemical combination of two or more elements in definite proportions | compound |
| type of mixture in which all the components are evenly distributed | solution |
| material composed of two or more elements or compounds that are physically mixed together but not chemically combined | mixture |
| substance that is dissolved in a solution | solute |
| dissolving substance in a solution | solvent |
| first producer of energy-rich compounds that are later used by other organisms | primary producer |
| organism that relies on other organisms for its energy and food supply; also called a heterotroph | consumer |
| organism that is able to capture energy from sunlight or chemicals and use it to produce its own food from inorganic compounds; also called a producer | autotroph |
| organism that obtains food by consuming other living things; also called a consumer | heterotroph |
| full range of physical and biological conditions in which an organism lives and the way in which the organism uses those conditions | niche |
| movement of individuals into an area occupied by an existing population | immigration |
| movement of individuals out of an area | emigration |
| process by which particles tend to move from an area where they are more concentrated to an area where they are less concentrated | diffusion |
| most biodiverse | tropical rain forest |
| least biodiverse | tundra |
| what gas does photosynthesis release into the atmosphere? | carbon dioxide |
| why does ice float? | ice is less dense then water. when water freezes it expands |
| Why is only 10% of energy in one organism available to an organism that eats it? | some is aborbed and some is lost by heat |
| how do enzymes work? | speeds up chemical reactions and decreases activation energy. takes up substrates |
| what happenes during dynamic equilibrim? | concentration is isotonic |
| process by which cells release energy in the absence of oxygen | fermentation |
| resource that cannot be replenished by a natural process within a reasonable amount of time | nonrenewable resource |
| resource that can be produced or replaced by healthy ecosystem functions | renewable resource |
| fundamental concept of biology that states all living things are composed of cells; that cells are the basic units of structure and function in living things, and that new cells are produced from existing cells | cell theory |
| 6CO2+6H2O -> C6H12O6+6O2 | photosynthesis |
| C6H12O6+6O2 -> 6CO2+6H20+ATP | celluar repiration |
| type of bond between atoms in which the electrons are shared | covalent bond |
| chemical bond formed when one or more electrons are transferred from one atom to another | ionic bond |
| succession that occurs in an area in which no trace of a previous community is present | primary succession |
| type of succession that occurs in an area that was only partially destroyed by disturbances | secondary succession |
| growth pattern in which a populations growth slows and then stops following a period of exponential growth | logistic growth |
| growth pattern in which the individuals in a population reproduce at a constant rate | exponential growth |
| unicellular that lacks a nucleus | prokaryote |
| organism whose cells obtain a nucleus | eukaryote |
| series of steps in an ecosystem in which organisms transfer energy by eating and being eaten | food chain |
| network of complex interactions formed by the feeding relationships amoung the various organisms in an ecosystem | food web |
Created by:
Holland22
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