Set 1: Command of Evidence (Intermediate)
Explanation
PASSAGE
Antibiotic resistance is a growing crisis. Bacteria can share resistance genes through a process called conjugation. In a lab experiment, resistant bacteria were mixed with non-resistant ones. After 24 hours, 80% of the previously non-resistant bacteria were found to be resistant.
What does the experiment demonstrate?
Detailed Explanation
This question requires you to identify evidence that supports a claim. The text introduces 'conjugation' as a way to share genes. The experiment shows non-resistant bacteria becoming resistant after mixing. This transfer is consistent with the described process of conjugation. The best evidence directly and explicitly supports the stated claim without requiring assumptions. Match specific textual details or data points to the claim being made. The correct answer provides clear, direct support. Strong evidence directly addresses the claim without requiring additional interpretation. When evaluating options, look for quotes or data that explicitly support the statement. Weak evidence may be tangentially related but doesn't provide direct proof.
Key Evidence:
• "share resistance genes... called conjugation"
• "mixed... found to be resistant"
Why others are wrong: B (This option is incorrect.), C (No antibiotics were used in the description.), D (The population clearly changed traits, implying activity.).