Competitive Exams: Medical Science MCQs (Practice-Test 92 of 135)

    • Assertion (A): Pigment gallstones are a mixture of conjugated bilirubin an insoluble bile salts.
    • Reason (R): Infection of biliary tract releases βglucuronidases and increases unconjugated bilirubin.
    1. Both A and R are individually true and R is the correct explanation of A

    2. Both A and R are individually true but R is not the correct explanation of A

    3. A is true but R is false

    4. A is false but R is true

    • Assertion (A): Bitemporal hemianopia occurs as a result of injury to optic tract.
    • Reason (R): Optic tract consists of ipsilateral temporal fibres and contralateral nasal fibres from the retina.
    1. Both A and R are individually true and R is the correct explanation of A

    2. Both A and R are individually true but R is not the correct explanation of A

    3. A is true but R is false

    4. A is false but R is true

    • Assertion (A): It is difficult to prove the temporal relationship between cause and effect in chronic diseases.
    • Reason (R): Slow onset and lack of knowledge on precise induction period make it hard to establish the temporal sequence in chronic diseases.
    1. Both A and R are individually true and R is the correct explanation of A

    2. Both A and R are individually true but R is not the correct explanation of A

    3. A is true but R is false

    4. A is false but R is true

    • Assertion (A): In India, mothers with HIV infection should breastfeed their babies and weaning should be done after four months.
    • Reason (R): The benefits of breastfeeding by HIV positive mothers far outweigh the risk of HIV infection in babies.
    1. Both A and R are individually true and R is the correct explanation of A

    2. Both A and R are individually true but R is not the correct explanation of A

    3. A is true but R is false

    4. A is false but R is true

  1. Match List-I with List-II and select the correct answer using the code given below the Lists:

    List-I (Haemoglobin Type) List-II (Polypeptide Chain Type)
    1. HbA

    2. HbA2

    3. HbF

    1. a2β2

    2. a2d2

    3. a2? 2

    • A
    • B
    • C
      • 3
      • 2
      • 1
      • 1
      • 3
      • 2
      • 2
      • 3
      • 1
      • 1
      • 2
      • 3
  2. With reference to biosynthesis of bile acids, consider the following statements:

    1. The enzyme 7a-hyroxylase requires Cytochrome P450 for its action.

    2. Vitamin C deficiency interferes with bile acid formation at the 7a-hydroxylation step.

    Which of the statements given above is/are correct?

    1. 1 only

    2. 2 only

    3. Both 1 and 2

    4. Neither 1 nor 2

  3. Consider the following statements: The ovulation occurs during the

    1. diminishing estrogen secretion after an initial increase

    2. beginning of progesterone secretion

    3. increase in FSH level

    Which of the statemtns given above is/are correct?

    1. 1 and 2 only

    2. 2 and 3 only

    3. 3 only

    4. 1, 2 and 3

  4. Which one of the following is considered as degeneracy of genetic code?

    1. A single codon stands for multiple amino acids

    2. One amino acid id represented by multiple codons

    3. Some condo cause mutation

    4. Base pairs are altered in bacterial when cultured for prolonged duration

  5. How may ATP molecules are synthesized for teach molecule of glucose during its oxidation under anaerobic conditions?

    1. 2

    2. 4

    3. 16

    4. 38

  6. The major site of airway resistance during breathing is

    1. oropharynx

    2. trachea

    3. intermediate sized bronchi

    4. alveoli

  7. Which one of the following ions is essential for absorption of glucose?

    1. Chloride

    2. Potassium

    3. Calcium

    4. Sodium

  8. What is the upper limit of concentrated haemoglobin in the cell fluid of RBC?

    1. 24 g/dl

    2. 28g/dl

    3. 34g/dl

    4. 42 g/dl

  9. The total body iron of a 70 kg adult is about

    1. 85 g

    2. 72g

    3. 65g

    4. 42 g

  10. Which one of the following is not a feature in Protein Energy Malnutrition?

    1. Decrease in plasma homocysteine

    2. Decrease in serum vitamin A

    3. Decreased subcutaneous fat

    4. Reduced T-cell mediated immunity

  11. Consider the following:

    1. Glucose-insulin infusion

    2. calcium gluconate infusion

    3. β2-Adrenergic agonists (like salbutamol)

    4. Spironolactone

    Which of the above constitute emergency treatment of hyper-kalemia in a patient with acute renal failure?

    1. 1 and 2 only

    2. 1, 2 and 3 only

    3. 3 and 4 only

    4. 1, 2, 3 and 4