Cystic fibrosis is a genetic disorder that creates excessive mucus in human organs. What is a person with this disorder missing?

the gene that codes for an important cell membrane protein

an important organ that breaks down mucus

the contractile proteins used in muscle movement

an important protein easily obtained through food

The correct option is A) the gene that codes for an important cell membrane protein.

Explanation:

Cystic fibrosis can be described as a condition which arises when a mutation occurs in the CTFR gene takes place. The CTFR gene codes for CTFR proteins. CTFR proteins can be described as proteins present in the transmembrane. These proteins are transmembrane regulators. In cystic fibrosis, the person is not able to produce the CTFR protein at all or makes abnormal CTFR protein. As a result, a thick and sticky mucus is generated.