Answer: Cry proteins are responsible for the death of lepidopteran insects and larvae (also called Bt toxin). Bacillus thuringiensis is the bacteria that produces it. Man took use of the gene encoding this toxin by introducing it into the cotton genome using Agrobacterium TDN A as a vector.
Cry protein is a crystal protein that is poisonous to insects and is expressed by the cry gene. Bacillus thuringiensis bacteria manufacture it in an inactive state. Because of the alkaline ph of insects’ stomachs, cry protein activation takes place when they eat it.
The intestinal epithelial cells are lysed, resulting in the death of insects. Humans benefit from integrating the BT toxin gene into crops to create insect-resistant transgenic crops, such as BT cotton.
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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.