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  • Question 1 - The length of DNA is generally measured in terms of number of: ...

    Correct

    • The length of DNA is generally measured in terms of number of:

      Your Answer: Base pairs

      Explanation:

      As DNA is made up of nucleotides, its length is measured by the number of base pairs in the DNA molecules.

    • This question is part of the following fields:

      • Genetics
      • Medicine
      9.7
      Seconds

  • Question 2 - The structure of haemoglobin A in adults includes ...

    Correct

    • The structure of haemoglobin A in adults includes

      Your Answer: Haem, globin polypeptide chains α and β

      Explanation:

      Haemoglobin A (HbA), also known as adult haemoglobin or α2β2, is the most common human haemoglobin tetramer, comprising over 97% of the total red blood cell haemoglobin. It consists of two alpha chains and two beta chains.

    • This question is part of the following fields:

      • Haematology
      • Medicine
      12.2
      Seconds

  • Question 3 - How does pregnancy affect the cardiac output of a patient? ...

    Correct

    • How does pregnancy affect the cardiac output of a patient?

      Your Answer: Increased cardiac output due to increase in heart rate and stroke volume

      Explanation:

      Cardiac Output increases to a similar degree as the blood volume. During the first trimester cardiac output is 30-40% higher than in the non-pregnant state. Steady rises are shown on Doppler echocardiography, from an average of 6.7 litres/minute at 8-11 weeks to about 8.7 litres/minute flow at 36-39 weeks; they are due, primarily, to an increase in stroke volume (35%) and, to a lesser extent, to a more rapid heart rate (15%). There is a steady reduction in systemic vascular resistance (SVR) which contributes towards the hyperdynamic circulation observed in pregnancy

    • This question is part of the following fields:

      • Cardiovascular
      • Medicine
      25.5
      Seconds

  • Question 4 - Hydroxyl radicals are broken down by which of the following substance? ...

    Incorrect

    • Hydroxyl radicals are broken down by which of the following substance?

      Your Answer: Hydroxyl reductase

      Correct Answer: Antioxidants

      Explanation:

      Unlike superoxide, which can be detoxified by superoxide dismutase, the hydroxyl radical cannot be eliminated by an enzymatic reaction but it is believed can be counteracted by antioxidants.

    • This question is part of the following fields:

      • Cell Biology
      • Medicine
      10.8
      Seconds

  • Question 5 - Cranial nerves VI, VII, VIII enter/exit the base of the brain at the:...

    Correct

    • Cranial nerves VI, VII, VIII enter/exit the base of the brain at the:

      Your Answer: Ponto-medullary junction

      Explanation:

      Cranial nerves III, IV and V exit from the pons, VI, VII, VIII exit from the pontomedullary junction and cranial nerve IX, X, XI, XII exit from the medulla.

    • This question is part of the following fields:

      • Medicine
      • Neurology
      8.2
      Seconds

  • Question 6 - Where in the gastrointestinal tract are valvulae conniventes? ...

    Correct

    • Where in the gastrointestinal tract are valvulae conniventes?

      Your Answer: Jejunum

      Explanation:

      The circular folds (valves of Kerckring or valvulae conniventes) are large valvular flaps projecting into the lumen of the small intestine.

    • This question is part of the following fields:

      • Gastrointestinal
      • Medicine
      12.2
      Seconds

  • Question 7 - Which enzyme deficiency can lead to ammonia intoxication? ...

    Incorrect

    • Which enzyme deficiency can lead to ammonia intoxication?

      Your Answer: Amino acyl transferase

      Correct Answer: Ornithine transcarbamylase

      Explanation:

      Ornithine transcarbamylase deficiency also known as OTC deficiency is the most common urea cycle disorder in humans. Ornithine transcarbamylase, the defective enzyme in this disorder is the final enzyme in the proximal portion of the urea cycle, responsible for converting carbamoyl phosphate and ornithine into citrulline. OTC deficiency is inherited in an X-linked recessive manner, meaning males are more commonly affected than females.

    • This question is part of the following fields:

      • Medicine
      • Metabolism
      18.9
      Seconds

  • Question 8 - The spleen underlies which ribs? ...

    Incorrect

    • The spleen underlies which ribs?

      Your Answer: 8 through 12

      Correct Answer: 9 through 11

      Explanation:

      The spleen lies between the 9th and 11th ribs on the left hand side.

    • This question is part of the following fields:

      • Haematology
      • Medicine
      15.8
      Seconds

  • Question 9 - The proportion of individuals within a population affected by disease at a specific...

    Correct

    • The proportion of individuals within a population affected by disease at a specific time point, based on positive testing for serum antibodies is known as:

      Your Answer: Sero-Prevalence

      Explanation:

      In immunology, seroconversion is the time period during which a specific antibody develops and becomes detectable in the blood. After seroconversion has occurred, the disease can be detected in blood tests for the antibody. Sero-prevalence includes individuals who are antibody positive for a specific infection at a specific point in time.

    • This question is part of the following fields:

      • Infectious Diseases
      • Medicine
      20.9
      Seconds

  • Question 10 - The average end diastolic volume in a healthy individual’s ventricle is? ...

    Incorrect

    • The average end diastolic volume in a healthy individual’s ventricle is?

      Your Answer: 80 ml

      Correct Answer: 130 ml

      Explanation:

      The end diastolic volume in a healthy individual is about 130 ml.

    • This question is part of the following fields:

      • Cardiovascular
      • Medicine
      12.7
      Seconds

SESSION STATS - PERFORMANCE PER SPECIALTY

Genetics (1/1) 100%
Medicine (6/10) 60%
Haematology (1/2) 50%
Cardiovascular (1/2) 50%
Cell Biology (0/1) 0%
Neurology (1/1) 100%
Gastrointestinal (1/1) 100%
Metabolism (0/1) 0%
Infectious Diseases (1/1) 100%
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