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20 questions
Microorganisms are too _____ to directly observe?
large
rare
small
far
Which are bigger: humans or microorganisms?
humans
microorganisms
Are all microorganisms the same size?
Yes
No
Which of these is smaller than microorganisms?
Atoms
Molecules
Electrons
Ants
What are the small red disks next to the microorganism? (plural)
white blood cells
red blood cells
tacos
ants
What are living things such as plants, animals and bacteria?
spiders
microorganisms
cells
organisms
The relative size of things.
scale
mass
time
energy
What are the small arachnids that live on organisms?
mites
fleas
worms
germs
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.
Cells come in different sizes and shapes.
True
False
All organisms are made of many cells.
True
False
Some organisms are made of only one cell.
True
False
All living things are made of cells.
True
False
The tiny structures that make up all living things and are the smallest unit able to perform life functions.
electrons
molecules
cells
atoms
Almost all cells are ________.
large
microscopic
flat
round
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
Cells are the smallest things that exist.
True
False
Molecules are smaller than cells.
True
False
Even though they are both too small to see cells are much bigger than molecules.
True
False
Are all microorganisms that live on and in us harmful?
Yes
No
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