Solution:
The two enzyme of DNA replication that has a central role in carrying out the process are-
- Helicase
- DNA polymerase.
They perform crucial tasks through which replication of DNA takes place.
Function of helicase
- It helps in unwinding of the two strand so that initiation can take place.
- It helps in melting of the hydrogen bond present between the nitrogenous bases of the DNA.
- Remodelling of nucleic acid is assured with the help of helicase.
Function of DNA polymerase
- It helps in the synthesis of polyribonucleotide’s from mono-deoxyribonucleoside triphosphates.
- It helps in error free replication by the help of proof reading.
- It removes the primer (primer are the oligonucleotide mRNA).
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west of the geographic north. The north tip of the magnetic needle of a dip circle placed in the plane of magnetic meridian points above the horizontal. The horizontal component of the earth’s field is measured to be 
Specify the direction and magnitude of the earth’s field at the location.At a certain location in Africa, a compass points 
and 
carrying currents of 
and 
in the same direction are separated by a distance of 
. Estimate the force on a 
section of wire A.
wire carrying a current of 
is placed inside a solenoid perpendicular to its axis. The magnetic field inside the solenoid is given to be 
. What is the magnetic force on the wire?
and making an angle of 
with the direction of a uniform magnetic field of 
. What is the magnitude of the field 
at a point 
from the wire?
-turns carrying current 
.
is at distance 
from the wire. Find the force acting on the electron if its velocity is directed towards the wire.