Viruses, v. Bacterial. So, what is a virus? Well, a virus is a non-living infectious agent and they are found everywhere. Now, a virus has no cell organelles. Meaning, a virus is not light but dead. There's a lot of controversy about this. I'm dead, guys. Indeed, you are. Now, a virus is also an infectious agent. They attack other cells and they are eliminated by the immune system. And they're also everywhere. Have I said that? So, what is bacteria you say? Bacteria is alive and only has one cell. It's multiplying rapidly and finding anywhere in clumps of groups. It's a prokaryotic which means it has no nucleus and lacks chlorophyll. So, what are the differences between viruses and bacteria? To start off, bacteria is considered a living thing. They have no nucleus and they have ribosomes. They also have a cell wall and a cell membrane. Vioses are not alive. They have capsids and in the capsids, they contain DNA and RNA. They have receptors and penetrators. They need a whole cell to perform functions. Bacteria are small, however, viruses are 100 times smaller. Now, viruses reproduce in different ways compared to bacteria. Now, first, absorption. Bacteria has attached themselves to a host cell. Second, injection. Inject their DNA or RNA into the cell. Third, replication. They use a cell to clone their own DNA or RNA. Fourth, assembly. They make enzymes made for a virus. Fifth, develop. The virus are made. And finally, the fully complete viruses are released from the host cell. And the process repeats. Bacteria reproduces differently from viruses. Bacteria reproduction is referred to as Bacteria growth, which is split into four stages. Stage 1 law. Nothing happens except back to metabolic activity. Stage 2 life. Bacteria publishing increases rapidly. The next stage, stationary, is when the birth rate of the bacteria equals the death rate of bacteria. However, in stage 4, the final stage, bacteria starts dying until very few or no none of the bacteria exist. Bacteria and viruses are treated differently. Viruses can only be treated with the use of vaccines. Fortunately, antibiotics were invented to cure bacteria. How does immune system call that viruses? When viruses enter the cell, the cell breaks up the virus using its enzymes. Then, it displays the pieces of the broken virus outside the cell. Antibodies are created using the DNA of the cell, and are produced. And then, they are sent outside the cell to stop the virus. The immune system call that bacteria differently. White blood cells create antibodies, which attach onto the bacteria. The antibodies demobilize bacteria, and sometimes stop dedicating to the bacteria to reduce the volume. The cells then locate the antibodies and eat up the bacteria. They do this by absorbing the bacteria into the cell membrane and then trapping it within another membrane inside the cell. Then enzymes in the cell eat up the bacteria. B and D. B and D.