Question

10 which of the following statements describes a microarray?
option 1: absorbent plates (\chips\) are loaded with thousands of potential gene sequences from different organisms, and patient specimens are incubated on the plates, allowing a computer to detect regions where there is a match.
option 2: patient samples are ionized when subjected to metal plates and lasers, and then the ions are separated and identified by their mass - to - charge ratio.
option 3: mris and pet scans are used to find areas in deep tissues where infections are caused by biofilms.
option 4: random primers are used to discover novel sequences in the microbe’s dna

Explanation:

To determine the correct description of a microarray, we analyze each option:

• The first option describes microarrays: absorbent plates (chips) with thousands of potential gene sequences from different organisms, and patient specimens are incubated on the plates to detect matches (this is how microarrays work for gene - sequence matching).
• The second option describes mass - spectrometry (ionization, separation by mass - to - charge ratio), not microarrays.
• The third option describes imaging techniques (MRI, PET scans) for detecting infections, not microarrays.
• The fourth option describes a process related to DNA sequencing with random primers, not microarrays.

Answer:

A. Absorbent plates ("chips") are loaded with thousands of potential gene sequences from different organisms, and patient specimens are incubated on the plates, allowing a computer to detect regions where there is a match.