CELLS AND VIRUSES
By: Gabriel Mekonnen
Influenza is a viral infection that attacks your respiratory system — your nose, throat and lungs.
HIV is a virus that gradually attacks the immune system, which is our body's natural defence against illness
A bacteriophage is a virus that infects and replicates within a bacterium
Lytic and Lysogenic
The lytic cycle is one of the two cycles of viral reproduction, the other being the lysogenic cycle. The lytic cycle results in the destruction of the infected cell and its membrane. Lysogeny is characterized by integration of the bacteriophage nucleic acid into the host bacterium's genome or formations of a circular replicon in the bacterium's cytoplasm.
Characteristics of Life
1. Describe the typical structure of a virus. What is a virus made of? What biomolecules
would you find in a virus?
A: Biomolecules-> Protein. Structure= head(capsid), collar, core, sheath, baseplate, and tail fibers.
2. Discuss the different ways viruses gain entry into a cell.
A: By attaching to a cell after infection, then injection of DNA/RNA
3. Explain why the Ebola virus would not infect a tobacco plant.
A: Because the Ebola virus only attacks animal cells.
4. Name five viruses and the type of cell that they attack.
A: Influenza- animal
5. You have been diagnosed with the flu. Explain why a doctor will not provide you
with a prescription for antibiotics in order to cure your infection.
A: Because antibiotics won't affect a virus.