If life consists of so many cells, why don’t we see them? a
Cells are camouflaged and are capable of disguising their selves for protection.
b
We can see them we just don't realize it.
c
They are completely transparent. They are so clear our eyes are not able to see them.
d
The human eye cannot see objects smaller than the width of a strand of hair, which is about 100 micrometers thick. The average animal cell is only about 10 micrometers.

Although cells come in many different shapes and sizes, most of the time, a cell’s shape is determined by the .

a
the amount of food it receives
b
what type of organism it is a part of
c
function it performs.
d
what type of energy it consumes

There are some basic characteristics that all cells have in common. Every cell has a .

a
cell membrane, nucleus, and DNA
b
cell membrane, cytoplasm, and DNA
c
jelly plasm, blueprint, and nucleus
d
cell membrane, stems, and DNA