1) The repeating units of proteins are a) amino acids b) fatty acids c) glucose units 2) Enzymes are a) proteins b) nucleic acids c) DNA molecule 3) The 3D structure of the protein can be determined by a) nuclear magnetic resonance b) both the other answers c) X-ray crystallography 4) Amino acids are joined by a) peptide bond b) ionic bond c) hydrogen bond

CLIL4STEAM Proteins multiple choice

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