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Which of these structures is three-dimensional?

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in Biology – Class 11 by (272k points)
Which of these structures is three-dimensional?

(a) Tertiary structure

(b) Primary structure

(c) Alpha–helix

(d) Beta–sheet

This question was posed to me during an interview for a job.

Query is from Biomolecules in chapter Biomolecules of Biology – Class 11

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Best answer
Right answer is (a) Tertiary structure

The best I can explain: The primary structure of proteins consists of a long chain of amino acids. The secondary structure of proteins which consists of helices and sheets is also a two-dimensional structure. However, the tertiary structure of proteins is a three-dimensional structure.

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