Tiny Life
A living thing too small to see with your eyes alone is a
Microorganism
All the microorganisms living in one environment, such as a human body, make up its ____.
Word clue: micro____
Microbiome
What TWO resources does the human body provide for gut bacteria?
Food and space.
After antibiotics, which bacteria may decrease?
A. Only helpful
B. Only harmful
C. Both helpful and harmful
C. Both helpful and harmful
All living things are made of these tiny structures. Bacteria are made of just one. What are they?
Cells. Each bacterium has one cell.
Sickness caused by harmful microorganisms is an ____.
Word clue: in____
Infection
Which better describes a healthy microbiome?
A. Various helpful types of bacteria
B. No bacteria at all
A. Various helpful types of bacteria.
Antibiotics reduce helpful bacteria.
Does this leave MORE or LESS food and space available for harmful bacteria?
More food and space, because fewer helpful bacteria are using them.
Plants, animals, and bacteria are all living things called ____.
A group of the SAME type living in one area is a ____.
Organisms; population.
These medicines kill bacteria.
They can reduce helpful bacteria as well as harmful bacteria.
Antibiotics
True or false: Every bacterium in the human body is harmful.
False. Many bacteria are helpful or harmless.
A fecal transplant introduces microorganisms from a healthy donor’s gut.
What does this add to the patient’s microbiome?
A community of microorganisms that includes helpful bacteria.
Scale means the relative size of things.
Which is larger: a cell or a molecule?
Can we usually see either with our eyes alone?
A cell is larger than a molecule. Both are usually too small to see with our eyes alone.
A claim supported by evidence is a scientific ____.
Word clue: argu____
Scientific argument.
Helpful bacteria use food and take up space.
How can this make it harder for harmful bacteria to grow?
Helpful bacteria leave less food and space for harmful bacteria, making it harder for them to grow.
A patient has a C. difficile infection.
How could adding helpful bacteria through a fecal transplant help?
Use food or space in your answer.
Added helpful bacteria use food and take up space, making it harder for harmful C. difficile to grow.