The nucleus (plural, nuclei) houses the cell's genetic material, or DNA, and is also the site of synthesis for ribosomes, the cellular machines that assemble proteins. Inside the nucleus, chromatin (DNA wrapped around proteins, described further below) is stored in a gel-like substance called nucleoplasm.
Acquired resistance occurs when a particular microorganism obtains the ability to resist the activity of an antimicrobial agent to which it was previously susceptible