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Biochemistry Flashcards

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6062243435Atomsmallest unit of an element0
6062243436Ionan atom or molecule with a net electric charge due to the loss or gain of one or more electrons.1
6062243437Isotopeeach of two or more forms of the same element that contain equal numbers of protons but different numbers of neutrons in their nuclei, and hence differ in relative atomic mass but not in chemical properties2
6062243438Moleculea group of atoms bonded together, representing the smallest fundamental unit of a chemical compound that can take part in a chemical reaction.3
6062243439Enzymea protein produced by a living organism that acts as a catalyst to bring about a specific biochemical reaction.4
6062243440Catalysta substance that increases the rate of a chemical reaction without itself undergoing any permanent chemical change.5
6062243441Substratea substance that increases the rate of a chemical reaction without itself undergoing any permanent chemical change.6
6062243442Carbohydrateany of a large group of organic compounds occurring in foods and living tissues and including sugars, starch, and cellulose. They contain hydrogen and oxygen in the same ratio as water (2:1) .7
6062243443Proteinany of a class of nitrogenous organic compounds that consist of large molecules composed of one or more long chains of amino acids and are an essential part of all living organisms, especially as structural components of body tissues such as muscle, hair, collagen, etc., and as enzymes and antibodies.8
6062243444Lipidany of a class of organic compounds that are fatty acids or their derivatives and are insoluble in water but soluble in organic solvents. They include many natural oils, waxes, and steroids.9
6062243445Nucleic acida complex organic substance present in living cells, especially DNA or RNA, whose molecules consist of many nucleotides linked in a long chain.10
6062243447HydrolysisThe chemical breakdown of a compound due to reaction with water.11
6062243448Dehydration synthisisprocess of joining two molecules, or compounds, together following the removal of water.12
6062243449Nucleotidebasic structural unit of nucleic acids such as DNA.13
6062243450DNAa self-replicating material present in nearly all living organisms as the main constituent of chromosomes. It is the carrier of genetic information.14
6062243451RNAa nucleic acid present in all living cells. Its principal role is to act as a messenger carrying instructions from DNA for controlling the synthesis of proteins15
6062243452Chemical Reactiona process that involves rearrangement of the molecular or ionic structure of a substance, as opposed to a change in physical form16
6062243453ATPcomposed of adenosine and three phosphate groups that supplies energy for many biochemical cellular processes17
6062243454Saturated Fata type of fat containing a high proportion of fatty acid molecules without double bonds, considered to be less healthy in the diet than unsaturated fat.18
6062243455Unsaturated Fata type of fat containing a high proportion of fatty acid molecules with at least one double bond, considered to be healthier in the diet than saturated fat.19
6062243456Covalent bonda chemical bond that involves the sharing of electron pairs between atoms.20
6062243457Ionic bondA chemical bond formed between two ions with opposite charges.21

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