Question

Which statement best describes the molecular structure of protein, along with one of the functions of proteins?
It is a straight chain hydrocarbon that can help fight disease.
It is a complex, folded chain that helps regulate cell processes.
It is a simple carbon, hydrogen, and oxygen molecule that creates movement.
It is a chain of nucleotides, and forms muscle, bone, and ligaments.

Answer 1

"It is a complex, folded chain that helps regulate cell processes."

Proteins are polymers of amino acids that fold into specific 3D shapes; they function as enzymes and hormones that regulate cellular processes (among many other roles).