51. Sleeping sickness is transmitted by

52. Considering the diverse application of microorganisms, which of the following best evaluates their overall importance? They have

53. Best method to control infection from HIV-contaminated needle?

54. As a clinical microbiologist, suppose you want to collect microbes from a food sample and isolate them via serial dilution. How do you determine the isolated colonies that grow on artificial media? By

55. Main difference between anabolism and catabolism?

56. receptors. Then, how does insulin regulate the blood glucose level if it is high in this patient? It stimulates Assume a patient with type II diabetes gets an advice to practice regular exercise to raise the number of insulin

57. Imagine the water content of the blood is low when you take in much salt with your food. What would happen in your kidney to regulate this situation? Osmoreceptor stimulates the

58. Major greenhouse gas and its sources?

59. Climate change affects agriculture by

60. Climate change mitigation practice in Ethiopia?

61. Which Ethiopian biological research institute houses a major gene bank in Africa?

62. A grade 12 student marked two dots close to each other using a pen on a piece of paper and observed them under a microscope. The two dots appeared well separated under the microscope. This was due to

63. Common features of both animal and plant cells

64. Effect of hypertonic and hypotonic solutions on potato slices

65. A man eats only vegetables, beans, banana and orange for one week continuously in his lunch and dinner. For this man, what nutrients are most likely missed in his meal to be a balanced diet?

66. Select the option that contains the correct match of human ear structure and its function.

67. This item is based on the following list of events that happen during hearing.

I. Transmission of amplified sound waves to the ear ossicles
II. Movement of sensory hair as a result of vibration of the fluid in the cochlea
III. Transmission of nerve impulse into the brain and response to the sound stimulus
IV. The pinna directs sound waves into the eardrum

Based on the above lists, which alternative shows the correct steps of the events of hearing?

68. Suppose low metabolic rate, cretinism and retarded mental and physical problems of infants and childhood in a small village. Which condition in the endocrine system results in these problems?

69. If a woman is admitted to hospital for giving birth, which hormone is helping her in the delivery of her baby and releasing of milk?

70. Ultrafiltration in kidney occurs by

71. Which group of archaea are found in volcanic vents and hot vapors that contain either obligate aerobes, facultative aerobes or obligate anaerobes?

72. Sexually transmitted fungal disease

73. This item is based on the following choices of feeding habit employed by organisms.

I. Using nutrients dissolved in the surrounding medium
II. Manufacturing own nutrients by photosynthesis
III. Depending on other plants or animals for food

Which method/s the protozoan used to get their nutrition? They employed

74. Correct disease, symptom and transmission

75. In order to link a specific microorganism to a specific disease, Koch used mouse as experimental animal. He took a small amount of blood from a diseased mouse and injected into a healthy mouth, the latter quickly developed anthrax. Again he took blood from this second mouse and then injected it into another; again he observed the symptoms of anthrax. What was his first postulate related with this procedure?