Explain the significance of reaction coupling in living systems. how is it used, and what does it allow living systems to do that they would not be able to do otherwise?

c.) polymerase chain reaction

- "unlike the original dna fingerprinting method, dna profiling does not use restriction enzymes to cut the dna. instead it uses the polymerase chain reaction (pcr)? to produce many copies of specific str sequences. pcr is an automated procedure that generates lots of copies of a specific sequence of dna."

1. dermis

2. chemical

3. urine

4. viruses

5. antibodies