Question

9
choose the statement that best describes the probe used in the hybridization method of microbe identification.
multiple choice
unlabeled complementary dna
labeled complementary dna
labeled identical dna
labeled complementary rna

Explanation:

In the hybridization method for microbe identification, the probe is a labeled complementary DNA (or RNA, but in this case, the correct option is labeled complementary DNA). The probe needs to be labeled (for detection) and complementary to the target microbial nucleic acid to hybridize. Unlabeled probes can't be detected, identical DNA wouldn't hybridize specifically, and while RNA probes exist, the option here with labeled complementary DNA is correct as per standard hybridization probe knowledge for microbe identification.

Answer:

B. Labeled complementary DNA (assuming the option with the blue dot is the second option, labeled as such; if the options were A: Unlabeled complementary DNA, B: Labeled complementary DNA, C: Labeled identical DNA, D: Labeled complementary RNA, then the answer is B. Labeled complementary DNA)