Which is NOT a high energy compound?

Correct Answer: B

Rationale: Correct Answer: B (GGP) Rationale: 1. CoA, ITP, and creatine phosphate are high-energy compounds involved in various metabolic processes. 2. GGP (guanosine-5'-triphosphate) is primarily a signaling molecule, not a high-energy compound. 3. CoA is involved in acetyl group transfer, ITP in energy transfer, and creatine phosphate in ATP regeneration. 4. GGP is a nucleotide involved in signaling pathways but does not directly participate in energy transfer reactions. Summary: - CoA, ITP, and creatine phosphate are high-energy compounds involved in energy transfer. - GGP is a signaling molecule and not classified as a high-energy compound.

Correct Answer: D

Rationale: The correct answer is D because corticosteroids are produced by the adrenal cortex, not the adrenal medulla. Cortisol is a type of corticosteroid, making choice A incorrect. Androgens are indeed produced by the adrenal cortex, making choice B correct. Calcitonin is produced by the thyroid, not the adrenal cortex, making choice C incorrect. Therefore, the only pair that is incorrect is corticosteroid and adrenal medulla.

Correct Answer: D

Rationale: The correct answer is D: Epiglottis. The epiglottis is a flap of tissue that covers the trachea during swallowing, preventing food from entering the lungs. When food is swallowed, the epiglottis closes off the trachea to ensure that the food goes down the esophagus into the stomach. Incorrect choices: A: The pyloric sphincter is a valve located between the stomach and the small intestine, regulating the flow of partially digested food. B: The trachea is the windpipe that connects the larynx to the bronchi, allowing air to pass into the lungs. C: The pharynx is the throat area where the pathways for both food and air cross, but it is the epiglottis that specifically prevents food from entering the lungs.

Correct Answer: B

Rationale: The correct answer is B: Pituitary gland. The pituitary gland is considered the most influential endocrine gland because it controls the functions of other endocrine glands by secreting various hormones that regulate growth, reproduction, metabolism, and other bodily functions. It is often referred to as the "master gland" due to its crucial role in maintaining hormonal balance and homeostasis in the body. Rationale: A: Pineal gland - The pineal gland primarily regulates the sleep-wake cycle through the secretion of melatonin and is not as influential in overall endocrine function as the pituitary gland. C: Thyroid gland - The thyroid gland regulates metabolism through the production of thyroid hormones, but it does not have the same level of control over other endocrine glands as the pituitary gland. D: Adrenal gland - The adrenal gland produces hormones like cortisol and adrenaline, which are important for stress response and metabolism, but it does not have the same regulatory influence over other