The following are parts of the respiratory system EXCEPT

Correct Answer: D

Rationale: The respiratory system conducts air for gas exchange. 'Gall bladder,' is correct as the exception, a digestive organ, per anatomy (e.g., Moore). 'Pharynx,' channels air and food. 'Trachea,' is the windpipe. 'Bronchi,' branch into lungs. Gall bladder's irrelevance to respiration makes D the precise answer.

Correct Answer: B

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

Correct Answer: C

Rationale: Gram-positive bacteria retain crystal violet stain due to thick peptidoglycan. 'Escherichia,' is correct as the exception, gram-negative (e.g., E. coli), per microbiology (e.g., Murray). 'Staphylococcus,' 'Streptococcus,' and 'Bacillus,' are gram-positive. Escherichia's gram-negative wall makes C the precise answer.

Correct Answer: D

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.