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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
The number, equal to the number of protons in an atom that determines its chemical properties. Symbol: Z
A globular protein that catalyses a biological chemical reaction.
A substance which increases the rate of a chemical reaction without being consumed in the process.
The science of finding, describing, classifying and naming organisms.
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.
A discrete and complete living thing, such as animal, plant, fungus or microorganism.
A specific place or natural conditions in which a plant or animal lives.
Any of the eukaryotic unicellular organisms of the kingdom Protoctista; including protozoans, slime molds and some algae.
A genus of unicellular protozoa that moves by means of temporary projections called pseudopodia.
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protist
Any of the eukaryotic unicellular organisms of the kingdom Protoctista; including protozoans, slime molds and some algae.
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
habitat
A specific place or natural conditions in which a plant or animal lives.
atomic number
The number, equal to the number of protons in an atom that determines its chemical properties. Symbol: Z
amoeba
A genus of unicellular protozoa that moves by means of temporary projections called pseudopodia.
taxonomy
The science of finding, describing, classifying and naming organisms.
synonyms: alpha taxonomy.
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.
organism
A discrete and complete living thing, such as animal, plant, fungus or microorganism.
