0
Because they are so small and had to wait for the invention of the microscope
Wiki User
∙ 9y ago
Wiki User
∙ 8y agoThey cannot be seen with the unaided eye (except for the "giant" cells of a few organisms like slime molds).
Add your answer:
Earn +20 pts
Anitgen-sensitized cells that remain in circulation for long periods of time?
memory cells
What process might have the caused the first cells to spontaneously generate over a very long period of time?
Chemical evolution is thought to have caused the first cells to spontaneously generate over a very long period of time.
What process might have caused the first cells to spontaneouly generate over a very long period of time?
Chemical evolution is thought to have caused the first cells to spontaneously generate over a very long period of time.
What are long lived b cell clone members that do not become plasma cells but are capable of an immune response against the same antigen at a later time called?
Memory Cells
If humans have so many brain cells why do they forget things?
This is because the brain cells get sent to another part of the mind, and retrieving it will take a long time to do so.
Is there undiscovered land?
actually, yes, in fact their on a land not yet discovered. There were even some a long time ago but have died of existence.
At the time of this revisit how many years had the tucks remained unchanged in age?
When they met Winnie, they had remained unchanged for 80 years.
What will happen when animal cells are in fresh water for a long time?
When animal cells are in fresh water for a long time cytolosis occurs and red blood cells explode.
What do lipids do in your cells?
Lipids store energy for long periods of time in your cells.
Why was the government of Egypt stable under Ramses the second?
He remained in power for a long period of time.
How do animal cells make more cells?
They divide, it takes some long time.
Anitgen-sensitized cells that remain in circulation for long periods of time?
memory cells
How can you get marijuana out of your fat cells?
You can wait. A long time
Is it true sharks have never evolved?
No, but they've remained very much the same for a very long time.
What are the dumbest questions asked?
What time is the ten o'clock tour? How many undiscovered caves are there?
Why is my systolic blood pressure elevated for a long time after exercise?
why not?
What process might have caused the first cells to spontaneous generate over time a very long period of time?
Chemical evolution is thought to have caused the first cells to spontaneously generate over a very long period of time.
