Question

the specific order and sequence of amino acids in a polypeptide chain is known as a primary structure of a protein. a primary structure folds to form shapes, called secondary structures, like alpha helices and and beta sheets. in some proteins, multiple secondary structures can form along a single polypeptide chain. the types of amino acids in the chain determine which secondary structures will form.
the model below shows parts of the primary and secondary structures of a protein.
image: primary structure (chain) → alpha helix, beta sheet (secondary structures)
complete the sentence.
secondary structures primary structure amino acids
the types of ____ in the __ of a protein determine the type of ____ that will form.

Explanation:

Step1: Analyze the first blank

From the text, we know that "The types of amino acids in the chain determine which secondary structures will form" and the chain here is the primary structure (since primary structure is the sequence of amino acids in a polypeptide chain). So the first blank should be "amino acids" as it's the types of amino acids that are the determining factor.

Step2: Analyze the second blank

The amino acids are part of the primary structure (the sequence of amino acids in a polypeptide chain). So the second blank is "primary structure" as the amino acids are in the primary structure.

Step3: Analyze the third blank

The text states that the types of amino acids determine which secondary structures form. So the third blank is "secondary structures" as that's what is being determined to form.

Answer:

The types of \boxed{amino acids} in the \boxed{primary structure} of a protein determine the type of \boxed{secondary structures} that will form.