(I) explain why the investigation was carried out at 40 C (II) describe the effect of pH on the rate of enzyme activity.

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."

the three components of a nucleotide are the nitrogenous base, the phosphate group and the five-carbon sugar.

thats not even an aswer choice