6th Grade · Science · Quiz · shared by Luke Morgan
Explore this free 6th Grade Science quiz on Biofilms: Microbe Cities. It covers how microbes form communities and their impact.
Multiple Choice
1. _____ According to the passage, what is the first thing a microbe does when it lands on a wet surface?
A. It sends out chemical signals to other microbes.
B. It begins to produce a special sticky substance.
C. It searches for nutrients and genetic information.
D. It creates a complex web made of minerals.
2. _____ What are the two main components that make up the extracellular matrix?
A. Water and oxygen
B. Chemicals and medicine
C. Sugars and proteins
D. Rocks and plaque
3. _____ What term do scientists use to describe these organized groups of microbes?
A. Bacterium
B. Secretions
C. Biofilms
D. Fortresses
4. _____ How do microbes initially grab onto a solid surface?
A. By using tiny, hair-like structures
B. By using their biological glue immediately
C. By waiting for other microbes to help them
D. By floating until they stick naturally
5. _____ What is the purpose of the chemical signals sent out by the first layer of microbes?
A. To ward off dangerous predators
B. To dissolve the solid surface
C. To invite other nearby organisms to join
D. To create extreme temperatures
6. _____ The extracellular matrix acts like a shield. Which of these does it protect microbes from?
A. Moisture and water
B. Sugars and proteins
C. Hair-like structures
D. Dangerous chemicals and some medicines
7. _____ Which of the following is a common example of a biofilm found on the human body?
A. Plaque on teeth
B. Hair on the head
C. Skin on the arm
D. Muscles in the jaw
8. _____ Where would you be most likely to find a biofilm in nature?
A. On a dry, sandy desert floor
B. On a slippery rock in a stream
C. In the middle of a hot, dry flame
D. Floating in the air far from any surface
9. _____ Why are biofilms considered a problem in hospitals?
A. They make medical tools too slippery to hold.