Virus / Bacteria Worksheet Bacterial and viral infections have many things in common. Both types of infections are caused by microbes -- bacteria and viruses, respectively -- and spread by things such as:
coughing and sneezing.
Contact with infected people, especially through kissing and sex.
Contact with contaminated surfaces, food, and water.
Contact with infected creatures, including pets, livestock, and insects such as fleas and ticks.
Microbes can also cause Acute infections, which are short-lived.
Chronic infections, which can last for weeks, months, or a lifetime.
Latent infections, which may not cause symptoms at first but can reactivate over a period of months and years.
Most importantly, bacterial and viral infections, can cause mild, moderate, and severe diseases.
Bacteria and viral infections are very close in the way they affect people and society. Virus are the smallest part of the microbes viruses use other people, dogs, and living things to survive if a virus is outside of it's host it can not survive for a long period of time. Bacteria on the other hand is much larger than a virus, bacteria can live anywhere and rarely causes infection unlike viruses. If conditions are ripe bacteria and viruses can multiple after every 20 minutes. If infections happen the symptoms are fever, fatigue, general malaise. These symptoms usual subside by themselves. It is important to keep good hygiene to prevent bacterial and viral infections. Regularly wash hands cover hands with tissue paper when coughing, also take proper care of even small wounds with iodine and alcohol.
Worksheet Answers
1. What is this structure? Bacteria
2. Identify parts A-F
A. Cell Wall
B Cell Membrame
C. Ribosome
D. pili
E. DNA
F. Flagellum
3. Name the two kingdoms of bacteria. List one way these groups differ from each
other. The two kingdoms of bacteria are Archaebacteria and Eubacteria. Archaebacteria-bacteria, live in harsh environments, such as the depths of the ocean, and have unique adaptations to survive. Eubacteria- Live in moderate environments and can be found everywhere around us - for instance in our bodies, our food.
4. Describe two roles bacteria have in the environment. Bacteria acts a decomposer and the end of food chains breaking down dead matter which reduces the risk of an environment polluted and full of harmful microorganisms. Certain species of bacteria converts atmospheric nitrogen into nitrates, taking nitrogen from the atmosphere and making it available to plants so they can live.
5. What are three foods that have been made using bacteria? Three dairy products made with bacteria are yogurt, cheese and buttermilk.
6. Following a flood, people are often advised to boil their drinking water. Explain
why this is necessary. Unhealthy and dangerous bacteria may be present in the water system following a flood. During and after flooding, water can become contaminated with microorganisms and sewage, boiling water acts a preventative measure to protect your health.
7. Describe two ways of killing bacteria. The use of a disinfectant will kill bacteria . Sterilization by heat will kill bacteria.
8. How are bacteria classified? Most bacteria are classified by their shape, cell wall, movement, eating, and breathing.
9. What are the three main shapes of bacteria? The three basic bacterial shapes are coccus (spherical), bacillus (rod-shaped), and spiral (twisted)
10. What is this structure to your right? Virus
11. What type of organism does this virus infect? Viruses infect all types of organisms, including animals and plants, as well as bacteria. Viruses must infect a living cell
12. Label parts A-D
a Head
b Tail sheath
c DNA
d Tail fibers
Virus life cycle A – G
13. Which letter indicates the host cell being lysed (destroyed)? F
14. Which letter above represents the stage at which a host cell begins producing new
bacteriaphages? E
15. Which letter indicates the stage at which the bacteriaphage injects its DNA into the
host cell? G
16. Looking at the above diagram which viral life cycle (lysogenic or lytic) is actively
using and then lysing (destroying) body cells to make more viruses? Lytic life cycle
http://www.webmd.com/a-to-z-guides/bacterial-and-viral-infections
http://www.microbeworld.org/index.php?option=com_content&view=article&id=169&Itemid=66