[Campbell Biology P.263] Based on the 'Your Data' bar chart, which of the following statemen... | Practice Question

Based on the 'Your Data' bar chart, which of the following statements accurately describes the effect of the peptides on S. aureus toxin production?

  • A: The control culture produced the lowest concentration of toxin, indicating that the peptides increased toxin production.
  • B: Peptide 1 was more effective at reducing toxin production than Peptide 2.
  • C: The combination of Peptide 1 and Peptide 2 resulted in the most significant reduction in toxin production.
  • D: All cultures with peptides produced toxin concentrations similar to the control culture.

Explanation

The bar chart visually represents the toxin concentrations. The control culture has the highest bar approx. 2.2 µmoles/mL . Peptide 1 approx. 1.0 µmoles/mL and Peptide 2 approx. 0.7 µmoles/mL both show reductions. The combination of Peptides 1+2 results in the lowest bar approx. 0.3 µmoles/mL , indicating the most substantial reduction in toxin production.