Question 17

Defective means faulty in the context of the passage.

The term "defective" refers to something that is not functioning correctly or is flawed. In the context of cystic fibrosis, it describes the gene that causes the disease, indicating that it has a fault that leads to the production of thick and sticky mucus.

A) Unusual

While "unusual" implies something that is not typical, it does not convey the sense of malfunction or flaw inherent in the term "defective." Therefore, this option is not an accurate synonym in the context of genetic defects causing cystic fibrosis.

B) Remarkable

"Remarkable" suggests something worthy of attention due to its extraordinary nature. However, this does not relate to the context of a faulty gene and is thus incorrect as it fails to address the negative connotation associated with the term "defective."

C) Remarkable

This option is identical to Option B and carries the same implications. It does not align with the meaning of "defective" in the context provided, as it suggests positivity rather than a flaw or malfunction.

D) Faulty

"Faulty" is the most accurate synonym for "defective," as it directly conveys that there is a problem or imperfection in the gene. This aligns perfectly with the context of cystic fibrosis, where the defective gene leads to serious health issues.

Conclusion

The correct answer, "faulty," accurately captures the negative implications of the term "defective" as used in the passage. Options A, B, and C fail to reflect the concept of malfunction inherent in "defective," focusing instead on unusual or noteworthy characteristics, which are not applicable in this medical context. Thus, "faulty" is the only appropriate choice that correctly describes the gene responsible for cystic fibrosis.