MCQ Bank
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.
- A) 2
- B) 1
- C) 3
- D) 4
Cantilever-based biosensors measure __________ change on the basis of the changes of resonance frequency of the excited piezoelectric film.
- A) Temperature
- B) Time
- C) Pressure
- D) Mass
Histones are ________ proteins.
- A) Acidic
- B) Basic
- C) None
- D) Neutral
The _____________ step for the DNA probe is essential to develop a whole range of biosensors and microarrays.
- A) Capping
- B) Adsorption
- C) Immobilization
- D) Detection
____________ amino acids that have hydrophobic side chains.
- A) 11
- B) 9
- C) 15
- D) 6
DNA can transport charge in solution and on the surface where it is _____________.
- A) Single Stranded
- B) Replicated
- C) Immobilized
- D) Positively Charged
__________ between basic Amino acid residues and Phosphate group form during of binding of DNA with histones.
- A) Polar Interactions
- B) Hydrogen Bonding
- C) Non-Polar Interactions
- D) Salt Bridge
The oxidation of DNA bases is carried out near pH ______ using phosphate buffer solution.
- A) 3.8
- B) 5.5
- C) 6
- D) 7.4
___________ between DNA and Amide group formed during binding of DNA with Histones.
- A) Salt Bridge
- B) Non-Polar Interactions
- C) Hydrogen Bonding
- D) Polar Interaction
__________ is oxidizes more easily as compared to the other bases of DNA.
- A) Cytosine
- B) Guanine
- C) Adenine
- D) Thymine
______________ is a combination of two non-covalent interactions such as hydrogen bonding and electrostatic interaction within the two biological molecules.
- A) Salt Bridge
- B) Chemotaxis
- C) Ionic interactions
- D) Hybridization
_________ bases of DNA acts as a proton donor and electro-activity improves the signals.
- A) Thymine
- B) Guanine
- C) Adenine
- D) Cytosine
_____________ are highly basic proteins found in eukaryotic cell nuclei that pack and order the DNA into structural units called nucleosomes.
- A) Albumin
- B) Riboflavin
- C) Biotin
- D) Histone
___________ is the insertion of molecules between the planar bases of DNA by Vander wall forces.
- A) Intercalation
- B) Transcription
- C) Replication
- D) Hybridization
Plant can assimilate atmospheric N into amino acids including __________ by the virtue of rhizobia.
- A) Glutamine
- B) Albumin
- C) Biotin
- D) Ascorbic Acid
Molecular weight of avidin/streptavidin is _________ kDa
- A) 70
- B) 90
- C) 55
- D) 40
Melting point of Cesium is ____________.
- A) 20.5
- B) 23.8
- C) 25.8
- D) 35
Atomic number of Cesium is ___________.
- A) 55
- B) 85
- C) 90
- D) 70
___________ plays main role in the evaporation of water.
- A) Vascular Bundles
- B) Flower
- C) Carpel
- D) Stomata
The fluid flow is turbulent when the value of Reynolds number is greater than __________.
- A) 3000
- B) 40
- C) 4000
- D) 1500