Vocabulary
the basic unit of structure and reproduction in all living things
What is a cell
Sam's gut contains 100 different species of bacteria. After taking a medication, only 30 species remain. What happened?
The bacteria decreased due to the antibiotics
Is a micrometer smaller or bigger than a nanometer
single celled organisms; difference species can be helpful, harmless, or harmful to humans.
What is bacteria
Maya looks at a drop of pond water under a microscope. She sees tiny living organisms moving around.
Microorganisms
List these in order smallest to largest: centimeter, micrometer, nanometer, millimeter, meter
nano, micro, milli, centi, meter
the variety of different organisms or species in a community
what is diversity
A harmful bacterium enters two different guts. Gut A has many different species of bacteria. Gut B has very few species.
Question: In which gut would the harmful bacterium likely have an easier time finding food and space to grow?
Gut B
How many times smaller is a nanometer than a micrometer
1000x
the community of microorganisms living in the digestive system
gut microbiome
A disturbance causes many helpful bacteria in a person's gut to disappear. A few days later, a harmful bacterium enters the gut and begins multiplying quickly.
Question: Why might the disturbance have made it easier for the harmful bacterium to grow?
There were fewer microorganisms competing with it for food and space, and fewer helpful bacteria providing protection
How many times smaller is a micrometer than a millimeter?
1000x
am interaction that happens when organisms need the same limited resources, such as food or space
Someone's gut contains many different species of bacteria, after a disturbance, the number and diversity drop. How could this affect harmful bacteria entering the gut?
This could make it easier for harmful bacteria to establish themselves in the gut.
How many times smaller is a nanometer than a meter
one billion times smaller