Which of following statements are true? (A)Proteins are readily used by the body for energy. (B)Proteins are made from amino acids. (C)Proteins contain the code for building DNA. (D)DNA contains the code for building proteins.

metals are good conductor of electricity. it has free electrons on their surface. according to electron pool theory, each atom present in a metal crystal losses all of its valence electron and as a result a pool of free is form. these pool of electrons are free to move and   conduct electricity easily   while making metal as good conductor.

the correct answer is a. the ability of electrons to flow throughout the metal.

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