Which term describes clusters of light-absorbing pigments?
photo-systems
grana
thylakoids
chlorophylls

The answer is chlorophylls. I just took the test.THIS IS THE RIGHT ANSWER.

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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."