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liberstina [14]
3 years ago
10

Which statement is true? Bronchitis can result in hoarseness. Cystic fibrosis is a genetic disorder that causes thick mucus secr

etions. Asthma causes a loss of appetite and weight. Pneumonia is an inflammation of the lungs that is caused only by bacteria.
Biology
2 answers:
s344n2d4d5 [400]3 years ago
5 0

Cystic fibrosis is a genetic disorder that causes thick mucus secretions.

Natalka [10]3 years ago
3 0

<u>Answer</u>:  Cystic fibrosis is a genetic disorder that causes thick mucus secretions.

<u>Explanation</u>:

  • <em>Cystic fibrosis</em> is a genetic disorder caused by mutations in a gene that makes a protein called CFTR (cystic fibrosis transmembrane regulator).
  • The CFTR protein normally functions as a channel for transport of chloride ions in cells responsible for mucus production.
  • A person suffering from cystic fibrosis produces abnormal CFTR protein or no CFTR protein at all.
  • This is the  reason that thick, sticky mucus is produced instead of the thin, watery kind.
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