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- 1. Multiple Choice
Microorganisms are too _____ to directly observe?
large
rare
small
far
- 2. Multiple Choice
Which are bigger: humans or microorganisms?
humans
microorganisms
- 3. Multiple Choice
Are all microorganisms the same size?
Yes
No
- 4. Multiple Choice
Which of these is smaller than microorganisms?
Atoms
Molecules
Electrons
Ants
- 5. Multiple Choice
What are the small red disks next to the microorganism? (plural)
white blood cells
red blood cells
tacos
ants
- 6. Multiple Choice
What are living things such as plants, animals and bacteria?
spiders
microorganisms
cells
organisms
- 7. Multiple Choice
The relative size of things.
scale
mass
time
energy
- 8. Multiple Choice
What are the small arachnids that live on organisms?
mites
fleas
worms
germs
- 9. Multiple Choice
Typically, how small are the microorganisms?
1/2 the size of a human cell.
1/4 the size of a human cell
1/10 the size of a human cell
1/1000 the size of a human cell.
- 10. Multiple Choice
Cells come in different sizes and shapes.
True
False
- 11. Multiple Choice
All organisms are made of many cells.
True
False
- 12. Multiple Choice
Some organisms are made of only one cell.
True
False
- 13. Multiple Choice
All living things are made of cells.
True
False
- 14. Multiple Choice
The tiny structures that make up all living things and are the smallest unit able to perform life functions.
electrons
molecules
cells
atoms
- 15. Multiple Choice
Almost all cells are ________.
large
microscopic
flat
round
- 16. Multiple Choice
If you were 20,000 times your actual size, about how tall would you be?
300,000 meters
3000 meters
30,000 meters
300 meters
- 17. Multiple Choice
Cells are the smallest things that exist.
True
False
- 18. Multiple Choice
Molecules are smaller than cells.
True
False
- 19. Multiple Choice
Even though they are both too small to see cells are much bigger than molecules.
True
False
- 20. Multiple Choice
Are all microorganisms that live on and in us harmful?
Yes
No
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