||What is the definition of disease?
A disorder of structure or function in a human, animal, or plant, especially one that produces specific signs or symptoms or that affects a specific location and is not simply a direct result of physical injury.
What is the definition of a pathogen?
A pathogen in the oldest and broadest sense is any organism that can produce disease.
What are the three variables that must exist for the disease to occur?
A disease occurs when a disease-causing agent, or pathogen, meets the right host organism under environmental conditions favorable to disease development. These three elements, pathogen, host, and environmental conditions make up the disease triangle.
What is the difference between infection and colonization?
According to the “Gale Encyclopedia of Medicine,” colonization is the presence of bacteria on a body surface (like on the skin, mouth, intestines, or airway) without causing disease in the person. Infection is the invasion of a host organism's bodily tissues by disease-causing organisms.
What are some threats to our food supply?
Threats to our food include virus outbreaks at food plants, climate change, soil depletion, and water shortages.
||We want to research how fast potato's rot in different temperatures, one in cold and one in heat.
We would also want to see if we can make a separate inoculum from another vegetable and compare the time in which it takes for our potato to rot from the vegetable's inoculum(bell peppers, carrots, cucumbers) to the time in which it takes for our potato to rot from another potato's inoculum.
||We believe that the temperature would lead to the heat rotting faster than in the cold because the humidity would cause a reaction to the inoculum making it create bacteria faster
||So for our independent variable, we have two separate temperatures. For our dependent variable, we have 2 inoculated potatoes with bacteria for our temperature variable and our control is another set of 2 inoculated potatoes with water.
Step:1 Inoculate the potato
Step:2 Place in an airtight Ziploc bag
Step:3 Place 2 potatoes into the fridge and 2 potatoes in a room
Step:4 Keep an eye on the potatoes every day taking them out to observe and record data
|Investigation Theme Copy
||High School Students (Grades 9,10,11,12)
||California Academy of Mathematics and Science