Show:
Variables
Microbes
Food Preservation
Infectious Diseases
Bacteria
100
The variable that is changed by the scientist.
The independent variable
100
There are four types of microbes. What are they?
Bacteria, viruses, protozoa and fungi
100
What are two different food preservation methods?
Refrigeration, pasteurization, pickling, vacuum-packing, dehydration
100
What is an infectious disease?
A disease caused by microbes that can be spread from one person to another.
100
Where can bacteria be found?
Everywhere.
200
The variable that is measured during an experiment
The Dependent Variable
200
Another name for a bad microbe is a ______________.
Pathogen
200
What does the word preservation mean?
To keep food fresh for a longer period of time
200
How are infectious diseases spread?
Bodily fluids, coughing, sneezing, blood, etc.
200
What is bacteria?
A microbe that can be seen with a microscope. Some can cause diseases. Some are used to produce foods.
300
The factors that are kept the same during an experiment
Constants
300
What two environmental conditions must be present for microbes to rapidly reproduce?
Warm and moist environment
300
How does pickling prevent bacteria from growing?
It uses acid (vinegar) to lower the pH so bacteria cannot grow.
300
What are two ways to prevent yourself from acquiring an infectious disease?
Washing hands, not touching your face, staying away from bodily fluids (other answers can vary)
300
Raw meat can grow bacteria. If food is not cooked to the proper temperature it can cause _____________________.
Food poisoning
400
In our bacteria lab, what was the independent variable?
The locations that we tested
400
What is the name of the substance on the inside of the Petri Dishes that we used to grow our bacteria.
Agar
400
Does refrigerating/freezing food kill bacteria? If not, what does it do?
No. It slows down the growth of bacteria.
400
What is the name of the method used by doctors to protect a person from getting a disease?
Vaccine
400
What role do bacteria play in the environment?
Decompose organic matter so it can break down nitrogen into a form that can be used by plants.
500
In our bacteria lab, what was the dependent variable?
The amount of bacteria that grew
500
What are two diseases caused by microbes?
Ebola, Zika, Influenza... many others (answers will vary)
500
Boxed milk stays fresh for almost six months. Why is this?
It has been pasteurized at an ultra high temperature that creates a 100% sterile environment.
500
What is the treatment used by doctors to cure a person that already has a disease caused by bacteria?
Antibiotics
500
What is the name of one specific type of bacteria?
E. Coli, Salmonella... answers may vary. (Specific diseases are not correct)