All terms in this list:
radioactive: Exhibiting radioactivity.
nucleus: The core, central part (of something), round which others are assembled.
trace element: A chemical element present in a sample in very small quantities.
matter: The basic structural component of the universe.
control group: The group of test subjects left untreated or unexposed to some procedure and then compared with treated subjects in order to validate the results of the test.
experiment: A test under controlled conditions made to either demonstrate a known truth, examine the validity of a hypothesis, or determine the efficacy of something previously untried.
prediction: A statement of what will happen in the future.
hypothesis: A tentative conjecture explaining an observation, phenomenon or scientific problem that can be tested by further observation, investigation and/or experimentation.
inductive: of, or relating to logical induction
deductive: Based on inferences from general principles.
Darwin: Capital of the Northern Territory (Australia).
cilium: A hairlike organelle projecting from a eukaryotic cell (such as unicellular organism or one cell of a multicelled organism). These structures serve either for locomotion by moving or as sensors.
cilia: Irregular plural form of cilium.
animalia: A kingdom in domain Eukaryota that consists of all multicellular organisms that have a central nervous system and rely on other organisms for energy.
fungus: a eukaryotic organism typically having chitin cell walls but no chlorophyll or plastids.
insect: An arthropod in the class Insecta, characterized by six legs, up to four wings, and a chitinous exoskeleton.
amphibian: Any four-legged vertebrate that does not have amniotic eggs, living both on land and in water.
reptile: A cold-blooded vertebrate of the Class Reptilia.
mammal: A vertebrate with three bones in the inner ear and one in the jaw.
taxonomy: The science of finding, describing, classifying and naming organisms.
vertebrate: having a backbone
catalyst: A substance which increases the rate of a chemical reaction without being consumed in the process.
enzyme: A globular protein that catalyses a biological chemical reaction.
mitochondrion: A spherical or ovoid organelle found in the cytoplasm of eukaryotic cells, contains genetic material separate from that of the host; it is responsible for the conversion of food to usable energy in the form of ATP.
nucleotide: the monomer comprising DNA or RNA biopolymer molecules. a five-carbon pentose sugar (deoxyribose in DNA or ribose in RNA); and a phosphate group.
cytosol: The aqueous solution of a cell's cytoplasm, consisting of water, organic molecules and inorganic ions.
chromosome: A structure in the cell nucleus that contains DNA, histone protein, and other structural proteins.
cytoplasm: The contents of a cell except for the nucleus.
homeostasis: The ability of a system or living organism to adjust its internal environment to maintain a stable equilibrium; such as the ability of warm-blooded animals to maintain a constant temperature.
embryo: In the reproductive cycle, the stage after the fertilization of the egg that precedes the development into a foetus.
eukaryotic: Having complex cells in which the genetic material is organized into membrane-bound nuclei.
prokaryotic: Of cells, lacking a nucleus.
base: Something from which other things extend; a foundation. A supporting, lower or bottom component of a structure or object.
acid: Sour, sharp, or biting to the taste; tart; having the taste of vinegar.
pH: The negative of the logarithm to the base 10 of the concentration of hydrogen ions, measured in moles per liter; a measure of acidity or alkalinity of a substance, which takes numerical values from 0 (maximum acidity) through 7 (neutral) to 14 (maximum al
acid rain: caused mainly by atmospheric pollution with sulphur dioxide and nitrogen compounds.
diffusion: the scattering of light by reflection from a rough surface, or by passage through a translucent medium
membrane: A flexible enclosing or separating tissue forming a plane or film and separating two environments (usually in a plant or animal).
cell theory: the theory that all living organisms are made of cells as the smallest functional unit
reductionism: an approach to studying complex systems or ideas by reducing them to a set of simpler components
cellulose: A polysaccharide containing many glucose units in parallel chains.
chlorophyll: Any of a group of green pigments that are found in the chloroplasts of plants and in other photosynthetic organisms such as cyanobacteria
photosynthesis: The process by which plants and other photoautotrophs generate carbohydrates and oxygen from carbon dioxide, water, and light energy in chloroplasts.
magnesium: A light, flammable, silvery metal, and a chemical element (symbol Mg) with an atomic number of 12.
phosphorus: a chemical element (symbol P) with an atomic number of 15, that exists in several allotropic forms.
nitrogen: A chemical element (symbol N) with an atomic number of 7 and atomic weight of 14.0067.
carbon: The chemical element (symbol C) with an atomic number of 6.
RNA: ribonucleic acid
DNA: deoxyribonucleic acid, the genetic material of nearly all forms of life.
genome: The complete genetic information (either DNA or, in some viruses, RNA) of an organism, typically expressed in number of basepairs.
genetics: The branch of biology that deals with the transmission and variation of inherited characteristics, in particular chromosomes and DNA.
genetic: relating to genetics or genes
ecology: The branch of biology dealing with the relationships of organisms with their environment and with each other.
chemistry: The branch of natural science that deals with the composition and constitution of substances and the changes that they undergo as a consequence of alterations in the constitution of their molecules.
periodic table: A tabular chart of the chemical elements according to their atomic numbers so that elements with similar properties are in the same column.
atomic weight: Former term for the more specific relative atomic mass.
atomic number: The number, equal to the number of protons in an atom that determines its chemical properties. Symbol: Z
neutron: A subatomic particle forming part of the nucleus of an atom and having no charge; it is a combination of an up quark and two down quarks
proton: A positively charged subatomic particle forming part of the nucleus of an atom and determining the atomic number of an element; the nucleus of the most common isotope of hydrogen; composed of two up quarks and a down antiquark
electron: An alloy of magnesium and aluminum.
amoeba: A genus of unicellular protozoa that moves by means of temporary projections called pseudopodia.
protist: Any of the eukaryotic unicellular organisms of the kingdom Protoctista; including protozoans, slime molds and some algae.
neuron: A cell of the nervous system, which conducts nerve impulses; consisting of an axon and several dendrites.
heterogeneous: Diverse in kind or nature; composed of diverse parts.
homogeneous: similar, or the same as something else
solution: A homogeneous mixture, which may be liquid, gas or solid, formed by dissolving one or more substances.
solute: Loose; free; liberal
solvent: A liquid that dissolves a solid, liquid, or gaseous solute, resulting in a solution.
hydrogen: The lightest chemical element (symbol H) with an atomic number of 1 and atomic weight of 1.00794.
oxygen: A chemical element (symbol O) with an atomic number of 8 and relative atomic mass of 15.9994.
element: One of the simplest or essential parts or principles of which anything consists, or upon which the constitution or fundamental powers of anything are based.
compound: an enclosure within which workers, prisoners, or soldiers are confined
isotope: Any of two or more forms of an element where the atoms have the same number of protons, but a different number of neutrons within thier nuclei.
habitat: A specific place or natural conditions in which a plant or animal lives.
ecosystem: A system formed by an ecological community and its environment that functions as a unit.
species: A group of plants or animals having similar appearance.
genus: a rank in the classification of organisms, below family and above species; a taxon at that rank
class: A group, collection, category or set sharing characteristics or attributes.
phylum: A rank in the classification of organisms, below kingdom and above class; also called a division, especially in describing plants; a taxon at that rank
kingdom: A nation having as supreme ruler a king and/or queen.
organism: A discrete and complete living thing, such as animal, plant, fungus or microorganism.
cell: A room in a monastery for sleeping one person.
molecule: The smallest particle of a specific element or compound that retains the chemical properties of that element or compound; a group of atoms held together by chemical bonds.
alchemy: The ancient search for a universal panacea, and of the philosopher's stone, that eventually developed into chemistry
chemist: A pharmacist.
biologist: A student of biology; one versed in the science of biology.
paleontologist: one who studies paleontology
natural selection: A process by which heritable traits conferring survival and reproductive advantage to individuals, or related individuals, tend to be passed on to succeeding generations and become more frequent in a population, whereas other less favourable traits tend t
evolution: A gradual process of development, formation, or growth, esp. one leading to a more advanced or complex form.
open system: A system allowing hardware and software from different manufacturers to be used together seamlessly.
tissue: Thin, woven, gauze-like fabric.
organ: A musical instrument that has multiple pipes which play when a key is pressed, or an electronic instrument designed to replicate such.
organelle: A specialized structure found inside cells that carries out a specific life process (e.g. ribosomes, vacuoles).
atom: The smallest mediaeval unit of time, equal to fifteen ninety-fourths of a second.