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KROK (Medicine) questions: Biology

183 questions in Biology. Open a question to see the answer options and a hint.

  1. A man suffering from a hereditary disease married a healthy woman. They got 5 children, three girls and two boys. All the girls inherited their father’s disease. What… KROK 1 2009 – Question 2
  2. A married couple consulted a specialist at the genetic consultation about probability of having children with hemophilia. Both spouses are healthy, but the wife’s… KROK 1 2009 – Question 23
  3. A female patient consulted a physician about digestive disorder, extended abdominal pain. Examination revealed drastic decrease in hemoglobin concentration. It is known… KROK 1 2009 – Question 25
  4. In the perianal folds of a 5-year-old girl her mother has found some white "worms" that caused itch and anxiety in the child. The "worms" were sent to the laboratory… KROK 1 2009 – Question 36
  5. Medical examination at the military registration and enlistment office revealed that a 15-year-old boy was high, with eunuchoid body proportions, gynecomastia, female… KROK 1 2009 – Question 53
  6. During a prophylactic medical examination a 7-year-old boy was diagnosed with daltonism. His parents are healthy and have normal colour vision, but his grandfather on… KROK 1 2009 – Question 68
  7. A woman delivered a dead child with multiple developmental defects. What protozoan disease might have caused the intrauterine death? KROK 1 2009 – Question 89
  8. A patient consulted an urologist about pain during urination. Analysis of his urine taken in the daytime revealed eggs with a characteristic sharp point. It is known… KROK 1 2009 – Question 110
  9. A married couple came to the genetic counseling. The husband suffers from the insulin-dependant diabetes, the wife is healthy. What is the probability that this couple… KROK 1 2009 – Question 128
  10. While on holiday in the countryside a boy found a spider with the following morphological peculiarities: body length of 2 cm, round black abdomen with two rows of red… KROK 1 2009 – Question 143
  11. A man has worked in an African country for 3 years. A month after his return to Ukraine he consulted an ophthalmologist and complained about eye ache, eyelid edema… KROK 1 2009 – Question 152
  12. A 28-year-old female patient consulted a gynecologist about sterility. Examination revealed underdeveloped ovaries and uterus, irregular menstrual cycle. Analysis of… KROK 1 2009 – Question 163
  13. According to the model of double DNA helix that was suggested by Watson and Crick, it was established that one of chains would not be lost during replication and the… KROK 1 2010 – Question 39
  14. During regular examination of schoolchildren it was revealed that a 10 year old girl had asymmetric oval eggs with a larva in the scrape from her perianal folds. What… KROK 1 2010 – Question 60
  15. It is known that the gene responsible for development of blood groups according to AB0 system has three allele variants. If a man has IV blood group, it can be… KROK 1 2010 – Question 68
  16. A patient has acne on his face. Microscopic examination of scrapings from the affected areas revealed living porrect vermiform arthropoda 0,2-0,5 mm large with four… KROK 1 2010 – Question 98
  17. A family of students who came from Africa got a child with anemia signs. The child died soon. Examination revealed that the child’s erythrocytes have abnormal semilunar… KROK 1 2010 – Question 103
  18. A patient working at a pig farm complains about paroxysmal abdominal pain, liquid feces with admixtures of mucus and blood, headache, weakness, fever. Examination of… KROK 1 2010 – Question 107
  19. A cell at the stage of mitosis anaphase was stimulated by colchicine that inhibits chromosome separation to the poles. What type of mutation will be caused? KROK 1 2010 – Question 147
  20. An alcoholic woman has born a girl with mental and physical developmental lag. Doctors diagnosed the girl with fetal alcohol syndrome. What effect is the cause of the… KROK 1 2010 – Question 166
  21. Cytogenetic examination of a patient with reproductive dysfunction revealed normal karyotype 46 XY in some cells, but most cells have karyotype of Klinefelter’s… KROK 1 2010 – Question 189
  22. A doctor revealed tissues injury on patient’s scalp with localized suppurations and diagnosed his disease as myiasis. This infestation is caused by larvae of the… KROK 1 2010 – Question 193
  23. Medical examination at the military registration and enlistment office revealed that a 15-year-old boy was high, with eunuchoid body proportions, gynecomastia, female… KROK 1 2011 – Question 27
  24. One of the parents is suspected of having phenylketonuria recessive gene. What is the risk of giving birth to a child with inborn phenylketonuria? KROK 1 2011 – Question 60
  25. While studying maximally spiralized chromosomes of human karyotype the process of cell division was stopped in the following phase: KROK 1 2011 – Question 76
  26. A patient consulted an urologist about pain during urination. Analysis of his urine taken in the daytime revealed eggs with a characteristic sharp point. It is known… KROK 1 2011 – Question 82
  27. A patient working at a pig farm complains about paroxysmal abdominal pain, liquid feces with admixtures of mucus and blood, headache, weakness, fever. Examination of… KROK 1 2011 – Question 113
  28. There is a severe time restriction for people’s staying at a height of over 8000 m above the sea level without oxygen bombs. What is the life limiting factor in this… KROK 1 2011 – Question 116
  29. Examination of a 12-year-old boy with developmental lag revealed achondroplasia: disproportional constitution with evident shortening of upper and lower limbs as a… KROK 1 2011 – Question 138
  30. A 28-year-old female patient consulted a gynecologist about sterility. Examination revealed underdeveloped ovaries and uterus, irregular menstrual cycle. Analysis of… KROK 1 2011 – Question 146
  31. A male patient has fever and enanthesis. As a result of the examination involving serological tests he has been diagnosed with fasciola hepatica. It was found out that… KROK 1 2011 – Question 155
  32. Sex chromosomes of a woman didn’t separate and move to the opposite poles of a cell during gametogenesis (meiosis). The ovum was impregnated with a normal spermatozoon… KROK 1 2011 – Question 174
  33. Cytogenetic examination of a patient with reproductive dysfunction revealed normal karyotype 46 XY in some cells, but most cells have karyotype of Klinefelter’s… KROK 1 2011 – Question 195
  34. A patient presents with acne and inflammatory alterations of facial skin. Microscopial investigation of lesion foci has revealed live arthropods sized 0,2–0,5 mm. They… KROK 1 2011 – Question 196
  35. A man suffering from a hereditary disease married a healthy woman. They got 5 children, three girls and two boys. All the girls inherited their father’s disease. What… KROK 1 2012 – Question 1
  36. A couple has a son with haemophilia. The parents are healthy but the maternal grandfather also has haemophilia. Specify the type of inheritance: KROK 1 2012 – Question 4
  37. Examination of newborns in one of the Ukrainian cities revealed a baby with phenylketonuria. The baby’s parents don’t suffer from this disease and have two other… KROK 1 2012 – Question 5
  38. Patients with similar complaints applied to the doctor: weakness, pain in the intestines, disorder of GIT. Examination of the faeces revealed that one patient with four… KROK 1 2012 – Question 14
  39. A female patient consulted a physician about digestive disorder, extended abdominal pain. Examination revealed drastic decrease in hemoglobin concentration. It is known… KROK 1 2012 – Question 22
  40. 46 chromosomes were revealed on karyotype examination of the 5 year old girl. One of the 15th pair of chromosomes is longer than usual due to connected chromosome from… KROK 1 2012 – Question 40
  41. During a prophylactic medical examination a 7-year-old boy was diagnosed with daltonism. His parents are healthy and have normal colour vision, but his grandfather on… KROK 1 2012 – Question 80
  42. It is known that the gene responsible for development of blood groups according to AB0 system has three allele variants. If a man has IV blood group, it can be… KROK 1 2012 – Question 99
  43. According to the phenotypic diagnosis a female patient has been provisionally diagnosed with X-chromosome polysomia. This diagnosis can be confirmed by a cytogenetic… KROK 1 2012 – Question 114
  44. A patient complains of skin itch, especially between fingers, in the inguinal creases, on the lower abdomen. Examination of these regions revealed there some small… KROK 1 2012 – Question 123
  45. Cytogenetic examination of a patient with dysfunction of the reproductive system revealed normal karyotype 46,XY in some cells, but most cells have Klinefelter’s… KROK 1 2012 – Question 145
  46. A cell at the stage of mitosis anaphase was stimulated by colchicine that inhibits chromosome separation to the poles. What type of mutation will be caused? KROK 1 2012 – Question 177
  47. Examination of duodenal contents revealed some pyriform protozoa with twin nuclei and four pairs of flagella. There were two supporting filaments between the nuclei and… KROK 1 2012 – Question 178
  48. A shepherd who has tended sheep together with dogs consulted a doctor about pain in his right subcostal area, nausea, vomiting. Roentgenoscopy revealed a tumour-like… KROK 1 2012 – Question 181
  49. Sex chromosomes of a woman didn’t separate and move to the opposite poles of a cell during gametogenesis (meiosis). The ovum was impregnated with a normal spermatozoon… KROK 1 2012 – Question 193
  50. Examination of an 18-year-old girl revealed the following features: hypoplasia of the ovaries, broad shoulders, narrow pelvis, shortening of the lower extremities… KROK 1 2013 – Question 22

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