Florida Biology EOC Practice Test 2025 – 400 Free Practice Questions to Pass the Exam

Question: 1 / 400

What determines the primary structure of proteins?

The number of protein folds

The sequence of amino acids

The primary structure of proteins is determined by the sequence of amino acids. This sequence is made up of 20 different types of amino acids, each with unique properties, and their specific order in a polypeptide chain dictates how the protein will fold and function. The unique arrangement of amino acids produces a distinct sequence that is essential for the overall structure and function of the protein.

Understanding that this sequence forms the backbone of the protein is crucial, as even a single change in the amino acid sequence can lead to significant changes in the protein's properties and its ability to perform its biological role. The other factors mentioned, such as the number of protein folds, type of enzymes, or color of the proteins, do not influence the primary structure; they are related to other aspects of protein biology such as folding, enzymatic activity, or the visualization of proteins.

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The type of enzymes present

The color of the proteins

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