資訊推薦

• 24. Why are cattle able to survive on a diet consisting almost entirely of plant material?(A) They a
• 30. The higher the proportion of loci that are "fixed" in a population, the lower is that
• 73. In biodiversity, which one is the correct description of ecosystem diversity?(A) The amount of g
• 65. In systematics and phylogeny, which one is the correct description?(A) A phylogenetic tree is ac
• 68. In the cells of the nervous system, which one is the correct description?(A) Ionotropic receptor
• 71. Which one is the correct description of salt and water balance in animal?(A) Sodium and potassiu
• 37. Cephalization is primarily associated with(A) adaptation to dark environments. (B) method of rep
• 19. Which of the following components and conditions increases membrane fluidity?(A) phospholipids w
• 21. When a cell releases a signal molecule into the environment and a number of cells in the immedia
• 25. Which one of the following, if present in a urine sample, would likely be caused by trauma?(A) a
• 72. In species interaction, which one is the correct description of allelopathy?(A) Amensalism(B) Th
• 38. The distinction between sponges and other animal phyla is based mainly on the absence versus the
• 22. Which structure is NOT part of the endomembrane system?(A) nuclear envelope (B) chloroplast (C)
• 26. The main source of energy for producers in an ecosystem is(A) light energy. (B) kinetic energy.
• 31. Which of these should decline in hybrid zones where reinforcement is occurring?(A) gene flow bet
• 39. What would be the most effective method of reducing the incidence of blood flukes in a human pop
• 32. The largest unit within which gene flow can readily occur is a(A) population. (B) species. (C) g
• 27. Trace elements are those required by organisms in only minute quantities. Which of the following
• 40. Which of these is NOT considered an amniote?(A) amphibians (B) nonbird reptiles (C) birds (D) eg
• 33. Which statement represents the best explanation for the observation that the nuclear DNA of wolv
• 41. Which of the following is true in plants?(A) Mitosis occurs in gametophytes to produce gametes.
• 42. We tend to think of plants as immobile when, in fact, they can move in many ways. All of the fol
• 74. In the cross Aa Bb CC Dd Ee × Aa Bb Cc Dd EE, in which all genes undergo independent assortment,
• 75. In gymnosperms and angiosperms, which one is the correct description?(A) All gymnosperms are win
• 50. Isolated populations will lose a percentage of their original diversity over time, approximately