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25. Which of the following experimental designs would provide the most robust evidence for the hypothesis that high-intensity ultrasound from bats serves as a specific trigger to inhibit moth flight? (A) Electrophysiological recording of moth motor neurons while mechanically stimulating the wing muscles. (B) Field observation of wild moths using high-speed infrared cameras while broadcasting ultrasonic pulses at frequencies and decibels mimicking hunting bats. (C) Qualitative observation of bat-moth interactions in a cave system to determine the percentage of successful strikes. (D) Laboratory trials comparing moth flight patterns when exposed to three-dimensional physical models of predators versus non-predatory insects. (E) Statistical analysis of moth population densities in regions with varying bat activity to correlate survival with flight cessation habits.

24. In the homeostatic regulation of mammalian acid-base balance, central and peripheral monitors detect fluctuations in the partial pressure of CO₂ and the concentration of H⁺ ions. Which of the following best categorizes the specialized sensory receptors located in the carotid bodies and the medulla oblongata responsible for this task? (A) Baroreceptors (B) Nociceptors (C) Thermoreceptors (D) Chemoreceptors (E) Proprioceptors

23. Which of the following hormones exhibits both positive and negative feedback controls on hormone release from the hypothalamus? (A) Follicle-stimulating hormone (FSH) (B) Luteinizing hormone (LH) (C) Estradiol (D) Progesterone (E) Testosterone

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