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50 Cards in this Set
- Front
- Back
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Biosphere
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All living things and all the places they are found on Earth make this up.
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Cell
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The basic unit of life.
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Observation
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Using the senses to study the world; using tools to collect measurements; examining previous research results.
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Dependent Variable
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Experimental data collected through observation and measurement.
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Atom
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Smallest basic unit of matter.
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Activation Energy
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Energy input necessary to initiate a chemical reaction.
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Monomer
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Each subunit in the complete molecule
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Fatty acid
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Hydrocarbon chain often bonded to glycerol in a lipid.
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Chemical Reaction
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Process by which substances Change into different substances through the breaking and forming of chemical bonds.
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Catalyst
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Substance that decreases activation energy and increases reaction rate in a chemical reaction.
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Biodiversity
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Variety of life within an area.
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Element
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Substance made of only one type of atom that cannot be broken down by chemical means.
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Ion
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Atom that has gained or last one or more electrons.
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Polymer
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Large , carbon based molecule formed by monomers.
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Protein
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polymer composed of amino acids linked by peptide bonds; folds into a particular structure depending on bonds between amino acids.
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Reactant
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substance that is changed by a chemical reaction. (pg 50)
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Enzyme
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protein that catalyzes chemical reactions for organisms.
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Species
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Group of organisms so similar to one another that they can breed and produce fertile offspring. (p.5)
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Experiment
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process that tests a hypothesis by collecting information under controlled conditions. (p16)
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Experimental Group
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a set of items or people under study to determine the effect of an event, a substance, or a technique.
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Compound
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substance made of atoms of different elements that are bonded together in a particular ratio.
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Ionic bond
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chemical bond formed through the electrical force between oppositely charged ions.
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Carbohydrate
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molecular composed of carbon, hydrogen, and oxygen; includes sugars and starches
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Amino acid
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molecule that makes up proteins; composed of carbon, hydrogen hydrogen, oxygen, nitrogen and sometimes sulfur.
pg. 47 |
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Product
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substance formed by a chemical reaction. (p. 50)
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Taxonomy
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Science of classifying and naming organisms. (p.518)
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Domain
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Scientists now classify organisms into an even broader category which is above the Kingdom level. (pg. 520)
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Family
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Third level in the Linnaean System. (seven levels in all)
(pg 520) |
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Biology
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Scientific study of all forms of life. (pg. 5)
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DNA
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Molecule that stores genetic information in all organisms.
(pg. 6) |
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Independent Variable
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Condition or factor that is manipulated by a scientist during an experiment. (p16)
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Constant
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Condition that is controlled so that it does not change during an experiment. (pg. 16)
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Molecule
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Two or more atoms held together by covalent bonds; not necessarily a compound (pg. 39)
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Covalent Bond
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Chemical bond formed when two atoms share one or more pairs of electrons. (pg 39)
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Nucleic Acid
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Polymer of nucleotides; the genetic material of organisms. (pg 48)
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Exothermic
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Chemical reaction that yields a net release of energy in the form of heat. (pg. 53)
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Binomial Nomenclature
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naming system in which each species is given a two-part scientific name (genus and species) using latin words (pg 519)
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Kingdom
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the broadest classification in The Linnaean Classification System. = Animalia
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Genus
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A closely related group of species.
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Organism
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Any individual living thing.
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Homeostasis
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regulation and maintenance of constant internal conditions in an organism. (pg. 9)
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Conclusion
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Official findings
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Theory
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A proposed explanation for a wide range of obeservations and Experimental results that i supporters by a wide range of evidence.
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Bond Energy
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The amount of energy that will break a bond between two atoms.
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Hydrogen Bond
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Attraction between a slightly positive hydrogen atom and a slightly negative atom.
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Lipid
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Nonpolar molecule composed of carbon, hydrogen, and oxygen; includes fats and oils. (pg 46)
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Nucleotides
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Monomer that forms DNA and has a phosphate group. (pg. 230)
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Endothermic
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Chemical reaction that requires a net input of energy. (pg 53)
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Phylum
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group of animals defined by structural and functional Characteristics that are different from every other animal phylum (pg 699)
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Species
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Group of organisms so similar to one another that they can breed and produce fertile offspring.
(pg 5) |
