Practice question

Two atoms cannot occupy the same space is the correct choice because it does not accurately describe or belong to the category addressed in this question. In the context of Peptide and Ramachandran plo, the other options (Peptide bond restricts angles, β-sheets and α-helices limit space, and Tertiary structure folding restricts movement) are all valid and well-established concepts. Two atoms cannot occupy the same space is either unrelated to the topic, describes a different biological process, or represents a common misconception. Questions framed as 'which is NOT' require students to identify the exception among otherwise correct statements, demanding comprehensive knowledge of the topic rather than recognition of a single fact.