Biology MCQs with Answer (part 1) by General knowledge Solutions

Biology MCQs with Answer (part 1) by General knowledge Solutions

                                                                                       

1. kernicterus can occur in

(A) Haemolytic jaundice

(B) Hepatic jaundice

(C) Obstructive jaundice

(D) All of these

Correct Answer:A

 2. Bile pigments are not present in urine in

(A) Haemolytic jaundice

(B) Hepatic jaundice

(C) Obstructive jaundice

(D) Rotor’s syndrome

Correct Answer:A

 3. Serum alkaline phosphatase is greatly increased in

(A) Haemolytic jaundice

(B) Hepatic jaundice

(C) Obstructive jaundice

(D) None of these

Correct Answer:C

4. The active transport system for hepatic uptake of bilirubin is congenitally defective in

(A) Gilbert’s disease

(B) Crigler-Najjar syndrome

(C) Rotor’s syndrome

(D) Dubin-Johnson syndrome

Correct Answer:A

 5. Bilirubin UDP-glucuronyl transferase is absent from liver in

(A) Crigler-Najjar syndrome, type I

(B) Gilbert’s disease

(C) Crigler-Najjar syndrome, type II

(D) Rotor’s syndrome

Correct Answer:A

 6. Unconjugated bilirubin in serum is soluble in

(A) Water

(B) Alkalis

(C) Acids

(D) Methanal

Correct Answer:D

 7. Excretion of conjugated bilirubin from liver cells into biliary canaliculi is defective in

(A) Gilbert’s disease

(B) Crigler-Najjar syndrome

(C) Lucey-Driscoll syndrome

(D) Rotor’s syndrome

Correct Answer:D

 8. Breakdown of 1gm haemoglobin produces

(A) 20 mg of bilirubin

(B) 35 mg of bilirubin

(C) 50 mg of bilirubin

(D) 70 mg of bilirubin

Correct Answer:B

9. Variable regions are present in

(A) Immunoglobulins

(B) α-Chains of T cell receptors

(C) β-Chains of T cell receptors

(D) All of these

Correct Answer:D

 10. The total amount of calcium in an average adult man is about

(A) 100 gm

(B) 500 gm

(C) 1 kg

(D) 10 kg

Correct Answer:C

 11. The following proportion of the total body calcium is present in bones and teeth:

(A) 75%

(B) 90%

(C) 95%

(D) 99%

Correct Answer:D

 12. The normal range of plasma calcium is

(A) 3-5 mg/dl

(B) 5-10 mg/dl

(C) 9-11 mg/dl

(D) 11-15 mg/dl

Correct Answer:C

 13. Which of the normal range of ionized calcium in plasma is

(A) 2-4 mg/dl

(B) 2-4 mEq/L

(C) 4-5 mg/dl

(D) 4-5 mEq/L

Correct Answer:C

14. Tetany can occur in

(A) Hypocalcaemia

(B) Hypercalcaemia

(C) Alkalosis

(D) Hypocalcaemia and alkalosis

Correct Answer:D

 15. Intestinal absorption of calcium occurs by

(A) Active takeup

(B) Simple diffusion

(C) Facilitated diffusion

(D) Endocytosis

Correct Answer:A

 16. Intest ina l absorption of calcium is hampered by

(A) Phosphate

(B) Phytate

(C) Proteins

(D) Lactose

Correct Answer:B

 17. Calcitriol facilitates calcium absorption by increasing the synthesis of the following in intestinal mucosa:

 (A) Calcium Binding Protein

(B) Alkaline Phosphatase

(C) Calcium-dependent ATPase

(D) All of these

Correct Answer:D

18. A high plasma calcium level decreases intestinal absorption of calcium by

(A) Stimulating the secretion of parathormone

(B) Inhibiting the secretion of parathormone

(C) Decreasing the synthesis of cholecalciferol

(D) Inhibiting the secretion of thyrocalcitonin

Correct Answer:B

19. The daily calcium requirement of an adult man is about

(A) 400 mg

(B) 600 mg

(C) 800 mg

(D) 1,000 mg

Correct Answer:C

 20. The daily calcium requirement in pregnancy and lactation is about

(A) 600 mg

(B) 800 mg

(C) 1,200 mg

(D) 1,500 mg

Correct Answer:C

 21. Hypercalcaemia can occur in all the following except

(A) Hyperparathyroidism

(B) Hypervitaminosis D

(C) Milk alkali syndrome

(D) Nephrotic syndrome

Correct Answer:D

 22. Hypocalcaemia can occur in all the following except

(A) Rickets

(B) Osteomalacia

(C) Hyperparathyroidism

(D) Intestinal malabsorption

Correct Answer:C

 23. The major calcium salt in bones is

(A) Calcium carbonate

(B) Calcium chloride

(C) Calcium hydroxide

(D) Calcium phosphate

Correct Answer:D

24. The correct statement about serum inorganic phosphorous concentration is

(A) It is higher in men than in women

(B) It is higher in women than in men

(C) It is higher in adults than in children

(D) It is higher in children than in adults

Correct Answer:D

25. The product of serum calcium concentration (mg/dl) and serum inorganic phosphorous concentration (mg/dl) in adults is about

(A) 30

(B) 40

(C) 50

(D) 60

Correct Answer:A

26. The product of serum calcium concentration (mg/dl) and serum inorganic phosphorous concentration (mg/dl) in children is about

(A) 30

(B) 40

(C) 50

(D) 60

Correct Answer:C

 27. The product of serum calcium concentration (mg/dl) and serum inorganic phosphorous concentration (mg/dl) is decreased in

(A) Rickets

(B) Hypoparathyroidism

(C) Hyperparathyroidism

(D) Renal failure

Correct Answer:A

28. Serum inorganic phosphorous rises in all the following conditions except

(A) Hypoparathyroidism

(B) Hypervitaminosis D

(C) Chronic renal failure

(D) After a carbohydrate-rich meal

Correct Answer:D

29. Serum inorganic phosphorous decreases in all the following conditions except

(A) Hyperparathyroidism

(B) Intestinal malabsorption

(C) Osteomalacia

(D) Chronic renal failure

Correct Answer:D

30. Serum magnesium level ranges between

(A) 2–3 mg/dl

(B) 3–5 mg/dl

(C) 6–8 mg/dl

(D) 9–11 mg/dl

Correct Answer:A

 31. Magnesium ions are required in the reactions involving

(A) NAD

(B) FAD

(C) ATP

(D) CoA

Correct Answer:C

 32. Normal range of serum sodium is

(A) 30–70 mEq/L

(B) 70–110 mEq/L

(C) 117–135 mEq/L

(D) 136–145 mEq/L

Correct Answer:D

33. Sodium is involved in the active uptake of

(A) D-Glucose

(B) D-Galactose

(C) L-Amino acids

(D) All of these

Correct Answer:D

34. Aldosterone increases reabsorption of sodium in

(A) Proximal convoluted tubules

(B) Ascending limb of loop of Henle

(C) Descending limb of loop of Henle

(D) Distal convoluted tubules

Correct Answer:D

35. Restriction of sodium intake is commonly advised in

(A) Addison’s disease

(B) Diarrhoea

(C) Hypertension

(D) None of these

Correct Answer:C

 36. Serum sodium level rises in all of the following except

(A) Renal failure

(B) Prolonged steroid therapy

(C) Aldosteronism

(D) Dehydration

Correct Answer:A

 37. Hyponatraemia occurs in the following condition:

(A) Addison’s disease

(B) Chronic renal failure

(C) Severe diarrhoea

(D) All of these

Correct Answer:D

38. Serum potassium level decreases in

(A) Familial periodic paralysis

(B) Addison’s disease

(C) Renal failure

(D) All of these

Correct Answer:A

 39. Concentration of the following is higher in intracellular fluid than in extracellular fluid:

(A) Sodium

(B) Potassium

(C) Chloride

(D) Bicarbonate

Correct Answer:B

 40. Normal range of serum potassium is

(A) 2.1-3.4 mEq/L

(B) 3.5-5.3 mEq/L

(C) 5.4–7.4 mEq/L

(D) 7.5–9.5 mEq/L

Correct Answer:B

 41. Normal range of serum chloride is

(A) 24–27 mEq/L

(B) 70–80 mEq/L

(C) 100–106 mEq/L

(D) 120–140 mEq/L

Correct Answer:C

42. An extracellular fluid having a higher concentration of chloride than serum is

(A) Bile

(B) Sweat

(C) CSF

(D) Pancreatic juice

Correct Answer:C