Lesson Objective

Explain how the four levels of protein folding are stabilized by specific chemical bonds, and describe how the linear directionality and base-pairing rules of nucleic acids store genetic instructions.

Why does a change in the primary structure of a protein (a single amino acid substitution) sometimes completely destroy its tertiary structure, while other times it has no effect?

How does the antiparallel nature of DNA structure provide a mechanical advantage for accurate replication?

1.5 Nucleic Acids
1.7-Proteins

Complex folding dictates the final architectural shape of functional proteins and genetic code molecules.

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Unit 1 Test