Los virus son: a) Un tipo de ser vivo con características celulares especiales.
b) Seres inertes que contienen material genético.
c) Seres vivos sin células
d) Animales microscopicos

What feature of cell theory is best demonstrated in the image

How can a geological time scale best be reconstructed? a) comparing vestigial structures in living species b) comparing homologous structures in living species c) examining homologous structures in fossil remains d) examining the written records of scientists from past cultures

Jason adds the antibiotic penicillin to a bacterial culture. the bacteria develop genetic modifications in their genome, which gives them resistance to the antibiotic penicillin. what caused this genetic modification?