A lever requires 25 pounds of force to lift 100 pounds. Use a direct variation equation to find how many pounds of force are required to lift 150 pounds?

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."

answer; motor (efferent)neurons;