In proteins, bonds between amino acids can cause a segment of the polypeptide chain to twist or fold in a corkscrew or zigzag pattern. The distribution of these corkscrew and zigzag patterns creates the structure of a protein.

Secondary

Explanation:

The secondary structure of a protein represents the specific conformation of segments of its polypeptide chain. These conformations are mostly formed when its amino acids interact with each other and form one or other type of weak interactions. For example, the alpha helix is a type of secondary structure of proteins that is formed when every first and the fourth amino acid form hydrogen bonds between them. It gives the polypeptide chain a helical structure and represents the secondary structure of that protein.

the electromagnetic energy from the sun arrives in the form of visible and invisible light.