15. Contact of sperm with signal molecules in the coat of an egg causes the sperm to undergo______.
(A) mitosis
(B) depolarization
(C) apoptosis
(D) vitellogenesis
(E) the acrosomal reaction

11. Why is the velocity of blood flow the lowest in capillaries? (A) The capillary walls are too thin to maintain the velocity of blood flow in capillaries. (B) Capillaries are far from the heart, and blood flow slows as the distance from the heart increases. (C) The diastolic blood pressure is too low to deliver blood to the capillaries at a high flow rate. (D) The total surface area of the capillaries is larger than the total surface area of the arterioles. (E) The systemic capillaries are supplied by the left ventricle, which has a lower cardiac output than the right ventricle.

12. The MHC (major histocompatibility complex) is important in a T cell's ability to_______. (A) identify specific viruses (B) recognize specific parasitic pathogens (C) distinguish self from nonself (D) identify specific bacterial pathogens (E) recognize differences between normal and cancer cells

13. What is the main nitrogenous waste excreted by birds? (A) uric acid (B)urea (C) nitrate (D) ammonia (E) nitrite

14. Prostaglandins are local regulators whose basic structure is derived from_______.(A) oligosaccharides (B) fatty acids (C)steroids(D)amino acids (E) nitric oxide

16. The blood-brain barrier______. (A) is formed by oligodendrocytes (B) provides support to the brain tissue (C) is formed by tight junctions (D) tightly regulates the intracellular environment of the CNS (E) uses chemical signals to communicate with the spinal cord

17. Which of the following is controlled by the magnitude of the potential of a sensory receptor? (A) adaptation (B) perception (C) the rate of reaction of the brain (D) the rate of production of an action potential (E) the rate of response to a sensory neuron

18. Which of the following is true about imprinting? (A) It occurs only in birds. (B) It may be triggered by visual or chemical stimuli. (C) It happens to many adult animals, but not to their young. (D) It is a type of learning that does not involve innate behavior. (E) It causes behaviors that last for only a short time (the sensitive period).

19. Natural selection involves energetic trade-offs between______. (A) choosing how many offspring to produce over the course of a lifetime and how long to live (B) producing large numbers of gametes when employing internal fertilization versus fewer numbers of gametes when employing external fertilization (C) the emigration of individuals when they are no longer reproductively capable or committing suicide (D) increasing the number of individuals produced during each reproductive episode with a corresponding decrease in parental care (E) high survival rates of offspring and the cost of parental care

20. What is the most important role of photosynthetic organisms in an ecosystem? (A) converting inorganic compounds into organic compounds (B) absorbing solar radiation dissipating heat (C) producing organic detritus for decomposers(D)dissipating heat  (E) recycling energy from other tropic levels

1. 何謂模寬(moulded width)？ (A)在船長中點處，由一舷的肋骨外緣量至另一舷的肋骨外 緣之間的水平距離 (B)在船體最寬處，由一舷船殼板外緣量至另一舷船殼板外緣之間的 水平距離 (C)在船體最寬處，由一舷的肋骨內緣量至另一舷的肋骨內緣之間的水平距離 (D)在船體最寬處，由一舷的肋骨外緣量至另一舷的肋骨外緣之間的水平距離