Final answer:
The concept that A.'it is a result of diffusion' is not associated with nucleic acid structure; it is related to the disk-diffusion assay for measuring the effectiveness of antimicrobials against bacteria.
Step-by-step explanation:
All of the options listed are associated with the structure of nucleic acids except for "it is a result of diffusion." The structures they refer to are related to the disk-diffusion assay used to measure the effectiveness of antimicrobials against bacteria, rather than nucleic acids. The assay involves placing disks soaked with antimicrobial agents on an agar plate inoculated with bacteria. After incubation, a zone of inhibition may form, indicating the effectiveness of the antimicrobial. The larger the zone's diameter, the more susceptible the bacteria are to the antimicrobial agent. The assay does not measure nucleic acid structure. Instead, it assesses bacterial susceptibility to antimicrobials based on the diameter of the clearing zones which is measured after incubation.
Some key concepts associated with the assay include antibiotic resistance, drug diffusion, and measurement of zones of inhibition. This method cannot determine the bacteriostatic versus bactericidal nature of the antimicrobials and is not used to compare drug potencies. Comparison to standard charts helps to determine susceptibility or resistance, but does not provide complete information on drug activities.
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