What is the distinction between bacteria and viruses?
a. Bacteria, composed only of DNA/RNA plus a protein coat, require a host so that the bacteria can grow and divide; viruses are single-celled microorganisms that do not require a host to grow and divide.
b. Bacteria are single-celled microorganisms that do not require a host to grow and divide; viruses, composed only of DNA/RNA plus a protein coat, require a host so that the virus can grow and divide
c. Both bacteria and viruses require a host so that they can grow and divide, but only viruses are composed of DNA/RNA and contain a protein coat.
d. Both bacteria and viruses are single-celled microorganisms that do not require a host to grow and divide, but only viruses are composed of DNA/RNA and contain a protein coat
Question 2
____ has the highest sexually transmitted infection rate in the industrialized world.
a. Denmark c. The U.S.
b. Brazil d. Canada
E. coli bacteria cell
Machanism of DNA uptake by bacteria
Alexander Fleming photographed in his lab where he observed the natural competition between a fungus
Gram positive S. pyogenes bacteria in chains.
Calculating Growth Rate of Bacteria
DNA supercoiling in bacteria