Answer: A
Explanation: PCR help to create multiples of copies, it can produce millions of copies of DNA sequence in a test type in limited or few hours. PCR has revolutionize molecular biology, and it has become an essential tools for biologist, physicians or anyone who really want to work on the DNA.
Answer:
B
Explanation:
I personal will go with B cause viruses attack your immune system then destroy healthy cells then copy it self through out the rest of the body.
D, is the answer. If you take antibiotics more than you're supposed to your immune system gets used to it and it no longer works.
Answer:
The reverse of the pump is for the cell to absorb water and store it inside the plasma membrane this happens when the organisms are in a hypotonic solution.
Explanation: