MCQ Bank
The release of less amount of Gln could be an indicator of _______ deficiency.
- A) Cl
- B) O2
- C) N2
- D) H2
DNA biosensors are based on the employment of DNA molecule as a________________
- A) Enzyme
- B) Biorecognition element
- C) Electronics
- D) Transducer
Peptide Nucleic Acids (PNAs) are ideal candidates as antisense or antigene therapeutic agents and are currently used as powerful tools in molecular biology and in diagnostics due to ___________________________.
- A) Strong Binding
- B) Both B & C
- C) High thermal stability
- D) Resistance to proteases and nucleases
The diploid cell has about ______ micrometers of chromatin.
- A) 75
- B) 150
- C) 90
- D) 100
_________ types of forces are involved in the ssDNA and protein interaction.
- A) 2
- B) 3
- C) 4
- D) 5
Each human diploid cell (containing 23 pairs of chromosomes) has about _______ meters of DNA.
- A) 1.2
- B) 1.8
- C) 3.2
- D) 0.6
Enzymes are employed in DNA based Biosensors to ___________________ of the DNA based biosensors.
- A) Decrease the sensitivity
- B) Increase the sensitivity
- C) Resolution
- D) Immobilization
___________ is a cationic polymer that can form a stable complex with the negatively charged phosphate groups of the DNA.
- A) Avidin
- B) Chitosan
- C) Biotin
- D) Streptavidin
The fluid flow is laminar when the value of Reynolds number (Re) is less than ________.
- A) 4000
- B) 6000
- C) 2000
- D) 8000
_____________ are the chief protein components of chromatin, acting as spools around which DNA winds, and playing a role in gene regulation.
- A) Biotin
- B) Albumin
- C) Histone
- D) Riboflavin
__________ are oligonucleotide hybridization probes that can report the presence of specific nucleic acids in homogeneous solutions.
- A) Molecular Beacons
- B) Aptamers
- C) Biophotonics
- D) Epitope
____________ is a device that can perform the functions of a laboratory on a single chip of only millimetres to a few square centimetres in size.
- A) SELEX
- B) Microfluidics
- C) Lab on a chip
- D) Raman Spectroscopy
_________ is composed of DNA wound 1.65 times around eight histone proteins.
- A) Nucleosome
- B) Nucleolus
- C) Nucleotide
- D) Nucleus
DNA-mediated Current Transport requires ___________ to the base pair stack.
- A) pH
- B) Resistance
- C) Electronic coupling
- D) Temperature
___________ is the technology of manipulating and controlling fluids and particles at micron and submicron.
- A) SELEX
- B) Lab on a chip
- C) Microfluidics
- D) Raman Spectroscopy
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