Mad cow disease is a fatal disease that destroys brain tissue. Researchers have found that a prion protein, which is an abnormally constructed molecule, is responsible. Which statement best describes the characteristics a protein must have to function correctly?
A) A protein is a long chain of amino acids folded
into a specific shape.
B) A protein is a long chain of simple sugars
folded into a specific shape.
C) A protein is made of amino acids synthesized
into a short, circular chain.
D) A protein is made of simple sugars synthesized into a short, circular chain