The Fact That a Single Defective Protein Causes Cystic Fibrosis

Multiple Choice

The fact that a single defective protein causes cystic fibrosis, a multisystemic illness, proves that

A) all organisms are composed of cells.
B) all levels of organization within an organism are interdependent.
C) chemical molecules make up cells.
D) all cells are independent of each other.
E) congenital defects can be life threatening.