mcq biology

Biophysics MCQ: Electrophoresis: for JRF NET Life Science Examination (Biology MCQ 009): Biophysical Instrumentation: Separation Techniques Part 1

Biology MCQ (Multiple Choice Questions in Life Science)
(Sample/Model/Practice Questions for JRF/NET Life Science Examination, ICMR JRF, DBT JRF, GATE, ICAR NET, PG Entrance)

Biophysical Instrumentation: Separation Techniques Part 1: (MCQ 009)

1). When voltage ‘V’ is applied across a pair of electrode (cathode and anode), a potential gradient ‘E’ is created between the electrodes. We can calculate ‘E’ as:

a.      E = V/d
b.      E = (1/V) x q
c.       E = (Vd)/q
d.      E = V + d

2). The velocity (‘v’) of a charged particles in an electric field in a medium can be mathematically expressed as v = Eq/f, where ‘Eq’ and ‘f’ are ________.

a.      Eq: Energy; f: Frictional force
b.      Eq: Electrical force; f: Gravitational force
c.       Eq: Electrical force; f: Frictional co-efficient
d.      Eq: Equilibrium constant; f: co-efficient of gravity

3). For the separation of DNA by electrophoresis, which of the following method is commonly used?

a.      Agarose – vertical
b.      Agarose – horizontal
c.       PAGE – vertical
d.      PAGE – horizontal

4). Sodium dodecyl sulfate (SDS) used in SDS PAGE is___________.

a.      An anionic detergent
b.      A cationic detergent
c.       A non-ionic detergent
d.      An anion exchanger
e.       A cation exchanger

5). Function of β-mercaptoethanol in SDS-PAGE is__________.

Continue reading