In the name of ALLAH, the most beneficient, the most merciful

Biosensors (BT505)

Multiple Choice Questions (MCQs)

Objective Questions

  1. The baseline lactate level in blood ranges from ________ mmol/l at rest.

    1. 0.5 to 1.5
    2. 1.5 to 2.0
    3. 2.5 to 3.0
    4. 4.0 to 4.5
  2. Histones are abundant in ________.

    1. Glutamine, Alanine
    2. Lysine, Arginine
    3. Valine, Proline
    4. Valine, Lysine
  3. ________ are the chief protein components of chromatin, acting as spools around which DNA winds, and playing a role in gene regulation.

    1. Histone
    2. Biotin
    3. Riboflavin
    4. Albumin
  4. The optimal pH of enzyme horseradish peroxidase is ________.

    1. 4.0-4.5
    2. 5.0-5.5
    3. 6.0-6.5
    4. 7.0-7.5
  5. When developing a new ELISA for a specific antigen, the first step is to ________ the ELISA.

    1. Optimize
    2. Immobilize
    3. Adsorb
    4. Capping
  6. An increase of one base pair in DNA-PNA duplex increases the thermal stability of the complex at least upto ________°C, as compared to DNA/DNA hybrids.

    1. 1
    2. 2
    3. 3
    4. 4
  7. Antibody lgG, has ________ high affinity binding sites.

    1. 2
    2. 3
    3. 4
    4. 5
  8. ________ are oligonucleotide hybridization probes that can report the presence of specific nucleic acids in homogeneous solutions.

    1. Molecular Beacons
    2. Biophotonics
    3. Aptamers
    4. Epitope
  9. ________ plays main role in the evaporation of water.

    1. Flower
    2. Vascular Bundles
    3. Stomata
    4. Carpel
  10. In ELISA, the modified form of ________ is used for immobilization.

    1. Polystyrene
    2. Polythene
    3. Polyvinyl chloride
    4. Neoprene