USMLE Quizzes & Trivia
Questions: 25 | Attempts: 273 | Last updated: Nov 11, 2016
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Sample QuestionOne of three blood culture bottles drawn from a patient with unexplained fevers reveals gram-positive cocci growing in clusters. Which of the following tests would be most useful in determining whether this organism is a part of the normal skin flora?
Questions: 25 | Attempts: 146 | Last updated: Nov 11, 2016
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Sample QuestionA 28-year-old male intravenous drug user presents with a febrile illness that has lasted 2 weeks. He also complains of chills, weakness, dyspnea, cough, arthralgia, diarrhea, and abdominal pain. On examination, a heart murmur is present, and small, tender nodules are found on the finger and toe pads, along with small hemorrhages on the palms and soles. Three sets of blood cultures are obtained from different veins. While awaiting laboratory confirmation, an empiric antibiotic regimen should primarily be directed at which of the following organisms?
This is a block of 46 questions of MCQ type with images in some questions. Choose the best answer for each question and get explanation at the end of exam when you submit. Time permitted is 1...
Questions: 20 | Attempts: 118 | Last updated: Jan 15, 2013
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Sample QuestionA peripheral blood smear shows normocytic, normochromic red blood cells. The other cell types are morphologically normal but reduced in number as well. Bone marrow biopsy in this patient would most likely show which of the following patterns?
Questions: 25 | Attempts: 93 | Last updated: Feb 27, 2013
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Sample QuestionA baby born at 32 weeks gestation with Apgar scores of 2 and 7 was placed in the neonatal intensive care unit. She developed a fever and leukocytosis; lumbar puncture revealed pleocytosis with increased protein, decreased glucose, and gram-positive rods. Which one of the following organisms was most likely isolated from the CSF?
For those of you who love all things biology and living organisms especially anatomy and how features work in the human body then this is the quiz for you. If you are prepared to test your knowledge, try it out.
Questions: 50 | Attempts: 71 | Last updated: Aug 4, 2017
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Sample Question. The secondary oocyte enters the second meiotic division and proceeds as far as metaphase. Which of the following is the stimulus required for continuation of the second meiotic division to produce the haploid ovum?
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USMLE Questions & Answers
What would the most appropriate therapy be? A 20-year-old female presents with a two-day history of dysuria and increased urinary frequency. She states that she was recently married and was not...
Ampicillin-the correct answer is a. the patients presentation is consistent with a simple urinary tract infection; there is a short history of dysuria, increased urinary frequency and the appearance of white blood cells and gram-negative rods in the
What did the lesion most likely involve? A patient experiences difficulty in walking downstairs and reports some double vision as well.
The correct answer to this question is C. Cranial nerve IV is used to look down and are in the medial position. The cranial nerve IV innervates the superior oblique muscle. If this cranial nerve is damaged on one side, double vision will occur, resul
Which of the following is the smallest active
functional unit (including conduction and air exchange) of the lung?
1. a respiratory bronchiolar unit -the smallest functional unit of the lung is the respiratory bronchiolar unit, which contains a respiratory bronchiole and the alveoli associated with it. this unit allows for air conduction and gas exchange. the alv
Which of the following excites the polar regions of the muscle spindle?
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1. gamma motor neurons -gamma motor neurons innervate the polar regions of the muscle spindle and, when excited, cause resetting of the spindle by stretching it, resulting in a lowering of the threshold for activation of that receptor by an external
Questions: 48 | Attempts: 70 | Last updated: Mar 4, 2013
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Sample QuestionAn oncologist recently discovered that certain cancerous cells secrete a protein named ca- 1panc. Using this protein, he developed a new blood test to detect this type of cancer. He performed the blood test on 1,000 patients. One hundred of these patients had the cancer, and the test came back positive for 60 of them, while for the remaining 40 patients the test was negative. Nine hundred of the patients did not have the cancer; however, the test was positive for 100 of them. In the remaining 800, the test came back negative. Which of the following numbers represents how well the test identifi ed those who had the cancer?
One of the ways through which doctors ascertain a disease someone is suffering from is through lab tests. In our phamatology class we have been able to learn more on how to identify which organism or signs in a patients...
Questions: 25 | Attempts: 67 | Last updated: Nov 6, 2018
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Sample QuestionA 12-year-old male is investigated for severe headache and is found to have an intraventricular mass by CT scan. The mass is well demarcated with pushing borders. Microscopically, the excised mass shows cells with nuclei showing open chromatin with an inconspicuous nucleus and, well-defined cytoplasm with tapering processes. These cells are arranged in rosette like rests and around the vessels forming pseudorosettes. Also seen are epithelial lined tubules. The delicate processes are positive with PTAH staining and are positive for GFAP. What is the most likely diagnosis in this case?
Questions: 100 | Attempts: 66 | Last updated: Jan 22, 2020
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Sample QuestionA normal, healthy, 25-year-old man lives at the beach. His twin brother has been living in a mountain cabin for the past 2 years. Which of the following indices would be expected to be higher in the man living at sea level?
For those of you who love all things biology and living organisms especially anatomy and how stuff works in the human body then this is the quiz for you. If you are prepared to test your knowledge try it out.
Questions: 50 | Attempts: 65 | Last updated: Aug 4, 2017
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Sample QuestionA sample of human DNA is subjected to increasing temperature until the major fraction exhibits optical density changes due to disruption of its helix (melting or denaturation). A smaller fraction is atypical in that it requires a much higher temperature for melting. This smaller, atypical fraction of DNA must contain a higher content of
Questions: 25 | Attempts: 63 | Last updated: Feb 28, 2013
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Sample QuestionAn Hispanic male is referred to the dermatology clinic of a major medical center. On physical examination, the man has several disfiguring lesions on his face and there is loss of cutaneous sensation to fine touch, pain, and temperature. An acid-fast organism is observed in scrapings from a skin lesion. Which of the following organisms is the most likely cause of this patient's disease?
Questions: 23 | Attempts: 55 | Last updated: Nov 7, 2012
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Sample QuestionA 1-year-old child develops voluminous watery diarrhea and vomiting. She is brought to the pediatrician by her parents and evaluated, then sent home with instructions for the parents to give the child an electrolyte replacement solution. Which of the following viruses is the most likely cause of the child's diarrhea?
Questions: 25 | Attempts: 47 | Last updated: Nov 7, 2012
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Sample QuestionA 33-year-old man in Arkansas presents to the local clinic with fever, chills, headache, and generalized myalgias and arthralgias. On physical examination, an ulcer with a black base is apparent on his right hand, and epitrochlear lymphadenopathy is noted. A careful history reveals that the man is a hunter and trapper, recently trapping and skinning rabbits. Which of the following organisms is the most likely cause of this man's illness?
Questions: 25 | Attempts: 46 | Last updated: Feb 28, 2013
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Sample QuestionAn 8-year-old boy is taken to a pediatrician because of behavioral changes, mild intellectual deterioration, and "laziness." Over the next several months the boy develops increasing clumsiness and periodic, involuntary, jerky movements every 3 to 6 seconds. Visual deterioration is apparent upon visual field testing, and optic atrophy is evident on funduscopic examination. Cerebrospinal fluid studies do not show significant pleocytosis, but oligoclonal bands of IgG are present on CSF electrophoresis. The electroencephalogram shows periodic discharges that are synchronous with the periods of myoclonus. Computed tomography (CT) of the head shows low-density white matter lesions and cerebral atrophy. At the age of 10, the boy dies. Prior infection with which of the following agents was probably related to the patient's condition?
Questions from various sources for practicing
Questions: 18 | Attempts: 45 | Last updated: Jan 10, 2013
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Sample QuestionJohn is a 57-year-old man who has always been a very heavy drinker, often consuming 2 pints of whiskey per day, for many years. Upon the urging of his wife, he decided to seek medical attention for help with problems with his gait, which has steadily worsened over the past several months. He noticed that he now needed to stand with his feet far apart in order to maintain his balance and that he waddled when he walked. The doctor who evaluated him tested his memory and speech carefully, as well as his cranial nerves, and was unable to find any deficits. There was no weakness, sensory loss, or abnormalities in his reflexes. When asked to touch the doctor's finger, then his nose, John missed his nose slightly, but rapidly corrected the movement on both sides. When asked to slide his right heel down his left shin, his heel slid sideways and clumsily across the bone until it reached his ankle. The response with the left heel was similar. When asked to walk, John walked with his feet very far apart. If he attempted to walk in a tandem fashion, with one heel in front of the other toe, he began to fall, and the doctor needed to catch him. The doctor ordered an magnetic resonance imaging (MRI) of John's head. The region of the affected area is associated with which functional division of the cerebellum?
Questions from various sources for practicing
Questions: 50 | Attempts: 45 | Last updated: Jan 10, 2013
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Sample QuestionA lesion at which site in the diagram below could produce weakness of muscles that mediate swallowing, chewing, breathing, and speaking?
Questions: 23 | Attempts: 44 | Last updated: Feb 28, 2013
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Sample QuestionA 20-year-old man arrives at the emergency room asking for a strong pair killer because he is in serious pain. The attending physician notices that he is very anxious and is sweating. The man states that he has no appetite and has a runny nose, nausea, stomach cramps, and diarrhea. He said that he took his temperature at home, which was 100°Fahrenheit. While he talks, he yawns and appears constantly restless. The attending physician recognizes that he is abusing a certain substance and is experiencing withdrawal. Which substance is it?
Questions: 25 | Attempts: 43 | Last updated: Nov 7, 2012
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Sample QuestionA 55-year-old man returns from a vacation to the beach. While on vacation, he and his family consumed several meals consisting primarily of seafood, including lobster and raw oysters. Although the other members of his family did not get sick, he developed a bullous rash over his lower extremities, hypotension, and confusion. His past medical history is significant for liver disease and alcoholism. The most likely cause of this man's signs and symptoms is
Questions: 25 | Attempts: 43 | Last updated: Feb 28, 2013
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Sample QuestionWhich of the following is a feature of gram-positive bacteria rather than gram-negative bacteria?
Questions from various sources for practicing
Questions: 20 | Attempts: 39 | Last updated: Jan 10, 2013
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Sample QuestionBenign prostatic hypertrophy results in obstruction of the urinary tract. This specific condition is associated with enlargement of which of the following?
Questions from various sources for practicing
Questions: 50 | Attempts: 38 | Last updated: Jan 9, 2013
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Sample QuestionThe structures labeled in the figure with an asterisk produce which of the following substances?
Biology and living organisms are interesting part of nature which are fascinating to study. If you are prepared to test your knowledge, this quiz will help you understand this part of nature even better, try it out.
Questions: 50 | Attempts: 32 | Last updated: Aug 4, 2017
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Sample Question. A 55-year-old woman presents with pain in her right hip and thigh. The pain started approximately six months ago and is a deep ache that worsens when she stands or walks. Your examination reveals increased warmth over the right thigh. The only laboratory abnormalities are alkaline phosphatase 656 IU/L (normal 23 to 110 IU/L), elevated 24-h urine hydroxyproline, and osteocalcin 13 ng/mL (normal 6 ng/mL). X-ray of hips and pelvis shows osteolytic lesions and regions with excessive osteoblastic activity. Bone scan shows significant uptake in the right proximal femur. Which of the following should you include in your differential diagnosis?
Questions: 20 | Attempts: 31 | Last updated: Feb 21, 2013
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Sample QuestionA 57-y/o man is brought to the emergencydepartment because of blurry vision, difficulty standing, and mental confusion. On physical examination the patient appears malnourished, he had diffuse crackles bilaterally, and on standing his gait is wide-based and unsteady. The patient’s friend, who accompanies him, says the patient “hasn’t been himself lately,” and is having difficulty remembering to do everyday tasks. Which neuropathologic findings are most consistent with this patient’s symptoms?
Anatomy, biology and living organisms are an important part of nature. If you are interested, take up this quiz and find out how much knowledge you have. All the best.
Questions: 50 | Attempts: 31 | Last updated: Aug 4, 2017
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Sample QuestionA 67-year-old woman slipped on a scatter rug and fell with her right arm extended in an attempt to ease the impact of the fall. She experienced immediate severe pain in the region of the right collar bone and in the right wrist. Painful movement of the right arm was minimized by holding the arm close to the body and by supporting the elbow with the left hand. Which of the following is the carpal bone most likely to dislocate anteriorly and cause a form of carpal tunnel syndrome?
Studying for the COMLEX 3 and going to start writing questions
Questions: 8 | Attempts: 30 | Last updated: Feb 19, 2013
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Sample QuestionA 42 year old man with a 20 year hx of Type I DM presents with a dime-sized ulcer on the plantar surface of his left foot. On physical exam you notice a swollen area around the wound that is tender and red. An initial X-ray exam demonstrates no periosteal elevation in any parts of the left lower extremity. What is the next step in the managment of this man's problem?
Questions from various sources for practicing
Questions: 50 | Attempts: 28 | Last updated: Jan 10, 2013
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Sample Question. A patient is capable of displaying pupillary constriction during an accommodation reaction but not in response to a direct-light stimulus. The lesion is most likely present in which of the following
