The pigment that gives colour to the skin is

Correct Answer: B

Rationale: Failed to generate a rationale of 500+ characters after 5 retries.

Correct Answer: D

Rationale: Bacterial resistance counters antibiotics. 'Nutrient uptake,' is correct as the exception, not a resistance mechanism, per microbiology (e.g., Levy). 'Efflux pumps,' expel drugs. 'Enzyme inactivation,' (e.g., beta-lactamases) degrades antibiotics. 'Target modification,' alters binding sites. Nutrient uptake's unrelatedness makes D the accurate answer.

Correct Answer: D

Rationale: Failed to generate a rationale of 500+ characters after 5 retries.

Correct Answer: C

Rationale: Failed to generate a rationale of 500+ characters after 5 retries.

Correct Answer: D

Rationale: Failed to generate a rationale of 500+ characters after 5 retries.