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37 Cards in this Set
- Front
- Back
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hypothesis |
A "guess" based on logical inferences and informed, creative imagination |
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experiment |
Results of experiments must be repeatable |
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theory |
A theory may eventually prove to be untrue and need to be revised |
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biology |
The study of the living world |
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homeostasis |
The way organisms keep their internal conditions fairly constant |
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a population |
A group of organisms of the same type that live in the same place |
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ionic bond |
Transferring electrons |
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covalent bond |
Sharing electrons |
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valence electrons |
Electrons available to form bonds |
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water |
most abundant compound in living things |
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solvent |
The liquid in which a solid is dissolved |
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solute |
The solid which is dissolved in a solvent |
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pH |
-pH above 7--basic -pH below 7--acid |
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emmigration |
Moving out of a population |
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immigration |
Moving into a population |
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catalyst |
A substance that speeds up a chemical reaction |
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prokaryotes |
A one-celled organism that does not have a nucleus |
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eukaryotes |
An organism whose cells have nuclei |
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demography |
Scientific study of human populations |
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nucleus |
Contains chromosomes which contain DNA, the genetic material of a cell |
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osmosis |
Diffusion of water across a selectively permeable membrane |
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diffusion |
The movement of molecules from an area of high concentration to an area of low concentration |
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cell wall |
Only found in plant cells |
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abiotic factor |
Nonliving factor that affects an ecosystem |
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biotic factor |
"Living-thing" influence on organisms within an ecosystem |
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levels of organization in a multicellular organism |
Cell, tissue, organ, organ system |
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isotonic solutions hypertonic solution hypotonic solution |
-the concentration of both solutions is the same -the specified solution is more concentrated than the other -the specified solution is less concentrated than the other |
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autotroph |
Organism that makes its own food (plants) |
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heterotroph |
Organism that obtains its energy from the food it eats |
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ATP (adenosine triphosphate) |
A major chemical compound that cells use to store and release energy |
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ATP/ADP |
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the photosynthesis equation |
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chloroplast |
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chloroplast |
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cellular respiration equation |
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cellular respiration |
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cell cycle |
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