Which of the following structures is a rigid
barrier found outside
of the cell membrane
in the plant cell?

Cell wall

Explanation:

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."

one centimetre is equal to 0.01 metres