Hey who wants to be in a padlet I'm going to make, it's going to be an Olivia Rodrigo fan padlet

Group of genes that encode molecules found in all body cells, creating a biochemical “fingerprint” that serves as the “id” for cells so that they are marked as “self” a) deoxyribonucleic acid (dna) b) entry inhibitors c) major histocompatibility complex (mhc) d) non-nucleoside reverse transcription inhibitors (nnrtis)

Why is it important to know first aid/ cpr/ aed?

First to answer will be the brainliest i need the answer asap