The vitamin that assists in blood clotting is

Correct Answer: C

Rationale: Vitamin K is essential for synthesizing clotting factors (e.g., prothrombin) in the liver. 'Vitamin K,' is correct, per physiology texts like Guyton, preventing bleeding disorders. 'Vitamin A,' aids vision. 'Vitamin B,' encompasses metabolic coenzymes, not clotting. 'Vitamin D,' regulates calcium. Vitamin K's specific role in coagulation cascades makes C the accurate answer.

Correct Answer: D

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

Correct Answer: B

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

Correct Answer: D

Rationale: The epidermis has five layers, deepest to superficial: basale, spinosum, granulosum, lucidum, corneum. 'Stratum albicans,' is correct as the exception, a scar tissue term, per histology (e.g., Junqueira). 'Stratum basale,' regenerates. 'Stratum spinosum,' strengthens. 'Stratum corneum,' is outermost. Stratum albicans' irrelevance makes D the accurate answer.

Correct Answer: D

Rationale: Culture media support microbial growth. 'Sterile,' is correct as the exception, a condition, not a type, per microbiology (e.g., Murray). 'Selective,' favors specific organisms. 'Differential,' distinguishes species. 'Enriched,' boosts fastidious growth. Sterile's preparatory role makes D the precise answer.