In 1970, hamilton smith isolated the first restriction enzyme. restriction enzymes are used to cut strands of dna at specific points. this discovery led to the development of recombinant dna, which is widely used in several scientific industries to produce proteins and hormones more cheaply and in much larger quantities than earlier methods. the change in scientific knowledge caused by smith’s discovery most directly affected which sector of society?
a technology
b commerce
c government
d education

The correct answer is A. technology.

Restriction enzymes are the class of enzymes used to create a nick in DNA strand. They cleave the DNA at or near a specific base sequence which is called as restriction site.

It leaded to the advancement in recombinant-DNA technology. Restriction enzymes made it possible for the scientists to make a recombinant DNA at that time. These enzymes help in creating the nick in a DNA at the desired position as well as in the production of sticky ends. At this desired position, the scientist then inset the gene of interest.

Recombinant-DNA (rDNA) technology enabled the scientists to produce insulin, penicillin, genomic libraries etc.

try using substitution:

x + y - 6 = x - y. (i'm not giving you the exact answer). since 0 = x - y, then sub 0 in the equation with x - y. combine your like terms, and then use inverse operations, and you'll have your answer.

: -)

after receiving a stimus, the sensory receptors send(s) signals to the appropriate area of the body.  

the must be sensory neurons.  

hope its .