Microbiome
What is the term for all the microorganisms that live in a particular environment, such as the human body?
All of the microorganisms that live in a particular environment, such as the human body.
Which unit is used to measure microscopic organisms?
Micrometers
If 2 cm = 1 micrometer, what is 9 cm in micrometers?
9 μm.
What substance is used in petri dishes to help microorganisms grow?
Agar, a gelatinous substance.
What happens to the human microbiome when antibiotics are taken?
Both helpful and harmful bacteria are killed.
What is a petri dish with nutrient agar used for in microbiology?
Growing cultures of microorganisms.
Convert 12 μm to cm using the scale provided.
0.12 cm
What is a common misconception about the effects of antibiotics on bacteria?
That only harmful bacteria are killed.
Why is it important to compare microorganisms at the same scale?
To ensure accurate comparisons and understanding of their impacts.
Name an example of a microorganism that lives on human skin.
Eyelash mites.
How do you express 2.5 μm in terms of centimeters?
0.025 cm.
How does mold relate to bacteria in terms of cellular structure?
Mold is made of fungal cells, which are different from bacteria in structure.
How do scientists make invisible microorganisms visible to the naked eye?
Using special dyes or letting them multiply into large colonies.
How many microorganisms typically live in and on a human body?
1 billion.
Why is understanding scale important in microbiology?
It helps in accurately representing the size and relationships of microorganisms.
Why didn’t Soraya see the mold growing on her soup before the fifth day?
She couldn’t see the mold growing because it was still at a microscopic level.
Explain the relationship between cells and living things.
The relationship is that all living things are made of cells.
What is the main difference between cells and molecules?
Molecules are smaller, and cells are larger and capable of performing life functions.
Calculate the scale equivalent of 24 cm in micrometers.
24 μm = 2.4 cm
If Soraya ate the soup on the fourth day, could she have gotten sick? Explain why or why not.
Yes, she could have gotten sick, as consuming spoiled food can lead to foodborne illness.