The process of cellular respiration
a) occurs only in animals
b) breaks down food molecules to release stored food
c) must occur before plants are able to carry out photosynthesis
d) is performed only by organisms that are in capable of photosynthesis

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."