Biology Project By: Ayla 2/1/2016
Characteristics of Bacteria
- Unicellular microorganism
- Can be either an autotroph or a heterotroph
Cell Walls/ How They Move
Bacteria move around using either their cilia or flagella.
How They Obtain Energy & Reproduce
Bacteria reproduce by a process called binary fission. Binary fission is when a single cell divides into two identical daughter cells. The process starts when the DNA replicates itself. After that, the cell just grows to twice its originally size, and then it splits.
How Are Bacteria Harmful & Helpful?
- Are the cause of food poisoning
- Are the cause of wound infection
- Can be found in untreated water, the ingestion of this could cause vomiting, stomach cramps, and flu-like symptoms
- Some act as plant pathogens, which may lead to major food shortages.
- Aids in digestion
- Production of cheese and yogurt
- Makes nitrogen found in the atmosphere into usable nitrogen in soil
- Breaks down dead organisms
Why are bacteriophage harmful?
If bacteriophage infected and destroyed the "bad" bacteria in our body, then that would be very helpful.
In History- Bacteria that have killed large numbers of people
- "White Death" (Tuberculosis) -In the late early and late 1800's affected a large amount of people in Sri Lanka
- "Black Plague" -out broke Europe in 1347, killed 20-30 million people
- Gonorrhea- Have affected up to this day, 62 million people
-Gonorrhea treatments include taking antibiotics.
-Treatments for Lyme Disease include taking antibiotics.
(All of these also include seeing a specialist)
- All the bacteria in our body weighs about 4 lbs.
- The "smell of rain" is caused by bacteria.
- Chocolate has an anti-bacterial effect on the mouth and protects against tooth decay.
- Babies are born with no bacteria in their bodies.
- Lined up end to end, they would stretch about 10 billion light years.