Insulin is:

Correct Answer: B

Rationale: Insulin is a small protein hormone with a molecular weight of approximately 5808 and contains disulfide linkages. This structure allows insulin to be stable and function effectively in regulating blood glucose levels. The other choices are incorrect because insulin is not a glycoprotein with a molecular weight of 6000, a fructooligosaccharide, or a catecholamine, as these do not align with the known characteristics and functions of insulin.

Correct Answer: C

Rationale: The correct answer is C: Piperazines; i.e. Hydroxyzine, Cyclizine. Piperazine-based H1 antagonists have the best antiemetic action due to their strong anticholinergic properties, which help in reducing nausea and vomiting. Hydroxyzine and Cyclizine specifically are known for their effectiveness in combating motion sickness and nausea. Alkylamines (A), Ethanolamines (B), and Ethylenediamines (D) are not as effective in treating nausea and vomiting compared to piperazines due to their weaker anticholinergic effects.

Correct Answer: C

Rationale: The correct answer is C: Vitamin D. Vitamin D resembles a hormone because it acts as a hormone in the body, regulating calcium and phosphorus metabolism. It is synthesized in the skin upon exposure to sunlight, similar to hormone synthesis. Vitamin K, A, and E do not function as hormones in the body and have different roles such as blood clotting (K), vision and immune function (A), and antioxidant activity (E), respectively.

Correct Answer: A

Rationale: Correct Answer: A Rationale: 1. VLDL is a lipoprotein containing a very large proportion of lipids to protein. 2. It carries cholesterol from the liver to the tissues. 3. VLDL is a precursor to LDL, carrying triglycerides and cholesterol. 4. Choice A correctly describes the characteristics and function of VLDL. Summary: - Choice B is incorrect as it describes LDL, not VLDL. - Choice C is incorrect as it describes HDL, not VLDL. - Choice D is incorrect as it describes chylomicrons, not VLDL.

Correct Answer: A

Rationale: The correct answer is A: TRUE. Gout is indeed a familial metabolic disease characterized by acute arthritis caused by monosodium urate deposits in joints. The term "familial" indicates a genetic predisposition to the condition. Choice B is incorrect because gout is not a random occurrence but rather a metabolic disorder. Choice C, "All," is incorrect as it implies that every possible consideration about gout is true, which is not the case. Choice D, "None," is also incorrect as there are specific characteristics and features associated with gout that make it distinguishable from other conditions.