What structural feature on the surface of a plasma membrane allows cells to recognize one another?
a. nucleic acids
b. integral proteins
c. peripheral proteins
d. carbohydrates
e. phospholipids

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."

more words for this could be abiotic and biotic

abiotic: living organisms within an ecosystem

biotic: non-living organisms within an ecosystem