AIPGE 2005 Dental 5

41. Heme is converted to bilirubin mainly in -

1. Kidney.
2. Liver.
3. Spleen.
4. Bone marrow.

42. HIV can be detected an confirmed by -

1. Polymerase Chain Reaction (PCR)
2. Reverse transcriptase
3. Real time PCR.
4. Mimic PCR.

43. All of the following hormones have cell surface receptors, except -

1. Adrenalin.
2. Growth Hormones.
3. Insulin.
4. Thyroxine.

44. Fluoride, used in the collection of blood samples for glucose estination, inhibits the enzyme -

1. Glucokinase.
2. Hexokinase.
3. Enolase.
4. Glucose-6-phosphatase.

45. Osteoclasts are inhibited by -

1. Parathyroid hormone.
2. Calcitonin.
3. 1,25-dihydroxycholecalciferol.
4. Tumor percrosis factor.

46. The protective effects of breast milk are known to be associated with -

1. IgM antibodies.
2. Lysozyme.
3. Mast cells.
4. IgA antibodies.

47. A simple bacteria test for mutagenic carcinogens is -

1. Ames test.
2. Redox test.
3. Bacteriophage.
4. Gene splicing.

48. Both Vitamin K and C are involved in -

1. The synthesis of clotting factors.
2. Post translation modifications.
3. Antioxidant mechanisms
4. The microsomal hydroxylation.

49. Enzymes that moves a molecular group from one molecule to another are known as -

1. Ligases.
2. Oxido – reductases.
3. Transferases.
4. Dipeptidases.
50. The membrane protein, clathrin is involved in -

1. Cell motility.
2. Receptor-mediated endocytosis.
3. Exocytosis.
4. Cell shape.