题目内容

( ): Amino acids that cannot be synthesized by humans and must be obtained from the diet.

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( ): The group of polyunsaturated fatty acids produced by plants, but not by humans; required in the human diet.

( ): A description of the covalent backbone of a polymer (macromolecule), including the sequence of monomeric subunits and any interchain and intrachain covalent bonds.

( ): The local spatial arrangement of the main-chain atoms in a segment of a polymer (polypeptide or polynucleotide) chain.

( ): Partial or complete unfolding of the specific native conformation of a polypeptide chain, protein, or nucleic acid such that the function of the molecule is lost.