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• 42. Which of the following is not true about helper T cells?(A) They function in both cell-mediated
• 41. In a neuroscience lab, a student increased the concentration of K+outside a neuron from 5 mM to
• 43. Which of the following statements about vision is not true?(A) Rods are more light-sensitive tha
• 44. Which of the following sensory receptors is incorrectly paired with its category?(A) Photorecept
• 45. Within a few weeks of treatment with the drug 3TC, a patient’s HIV population consists entirely
• 47. Which of the following descriptions are correct?1. Green algae — closest relative of green plant
• 48. Which of the following is an example of an opportunistic pathogen that can cause a mycosis?(A) C
• 46. A founder event favors microevolution in the founding population mainly because ________.(A) mut
• 49. Which of the following hormones is produced by adipose cells that helps to control appetite?(A)
• 51. When light strikes the pigment rhodopsin in a rod cell, retinal dissociates from opsin, initiati
• 50. The high osmolarity of the renal medulla is maintained by all of the following except ________.(
• 52. The transduction of sound waves to action potentials takes place ________.(A) within the tectori
• 53. Which one of the following hormones could raise the level of basal metabolic rate (BMR)?(A) Calc
• 54. Which of the following amino acid and the derivative is not proved to be a neurotransmitter?(A)
• 56. Which of the following statements is true?(A) In Crassulacean acid metabolism (CAM) plants, carb
• 57. Which of the following traits is shared by charophytes and land plants?(A) Alternation of genera
• 58. Which of the following statements for characteristics of monocots and eudicots is not true?(A) V
• 60. Which of the following statements for cellular respiration and photorespiration is false?(A) Bot
• 59. In the process of double fertilization, one sperm nucleus undergoes fusion with the egg nucleus
• 61. A mixture of four amino acids is separated by using a cation exchanger with an elution gradient
• 62. For an α-helix has the sequence : +H3N-Asp-Trp-Gln-Leu-His-Val-Phe-Ala-Lys-Val-Glu-COO-, the car
• 30. In which country would you find this landscape?(A) Panama (B) Peru (C) Spain (D) Uruguay
• 63. The carbohydrate moiety is always attached to glycoproteins through _______.(A) aspartate, gluta
• 65. Taking one mole of glucose through glycolysis and the citric acid cycle generates:(A) 6 CO2, 8 N
• 64. Which of the backbone repeated units of polysaccharides is not correct?(A) Amylose: (α1-4) Glc (