# data[].attributes.body
Are the organelles actually different colors or are they colored to help us differentiate between them?

# data[].attributes.body
what would happen if the DNA mixed with everything else in the cell?

# data[].attributes.body
Is it possible that bacteria can get through the nucleus's cell membrane?

# data[].attributes.body
Why are prokaryotic cells able to function without separated organelles, when eukaryotes cannot?
They do less stuff. Also, their cell membrane does some pretty complicated stuff.

# data[].attributes.body
Why are there two kinds of ER?
Why doesn't a prokaryotic cell have as any ¨compartments¨ as an eukaryotic cell?

# data[].attributes.body
Why do white blood cells look sorta spiky?
It gives them more surface area.

# data[].attributes.body
What ER is more important to us?

Can't do without either.

# data[].attributes.body
How do scientists come up with the names for the different organelles?

I think usually they just tried to make the name descriptive of how it looks or of what it does. Golgi is named after the guy who first saw and described it.

# data[].attributes.body
Do prokaryotic cells need to make Proteins for itself?

Yes. Every cell has ribosomes because every cell needs proteins.

# data[].attributes.body
Why does every cell have smooth endoplasmic reticulum and not rough?
Essentially every cell has both because cells need to synthesize lipids (smooth) and export proteins (rough).

# data[].attributes.body
How would the DNA be harmed if it wasnt in a nuclear envelope?

See third "Nucleus" paragraph

# data[].attributes.body
How many different types of animal cells are there? This is more as in what varies between different living things.
very hard to know - humans alone have dozens of kinds of cell. Then there are the incredibly diverse protista (single-celled eukaryotes).

# data[].attributes.body
How many different types of cells are there?
See response to JS.

# data[].attributes.body
How are we alive if most of our cells aren't even ours.
They are bacteria which nearly all either help us or leave us alone.

# data[].attributes.body
Cell division.
We first have to very carefully and precisely sort our chromosomes, then we just sort of chop the rest of the cell in half.

# data[].attributes.body
Can a multi cellular organism be comprised of only prokaryotic cells?
Prokaryotes are only single-celled although some can aggregate together and kind of look and work like a multicellular organism

# data[].attributes.body
How do cells reproduce?
cell division...coming in December!

# data[].attributes.body
Can cancer come from any cell in the body?
Yes, hypothetically. Some cancers are very rare because they are in cells that don't divide or hardly ever divide. Most common cancers are in cells that have to divide a lot (skin, stomach, colon, breast).

# data[].attributes.body
Besides a cell wall how do animal cells differ from plant cells.

We'll look at that the next two days. There are some organelles unique to both.

# data[].attributes.body
What do all cells have in common?
plasma (cell) membrane
cytoplasm (cytosol)
DNA
ribosomes

# data[].attributes.body
How did scientists find out that there is about 37 trillion cells in the human body?

# data[].attributes.body
where do you think the first cell came from.
The cell membrane is really similar to things called coacervates, which are self-assembling, hollow, lipid spheres. The self-replicating part is currently thought (mostly) to have been RNA, which can take on different shapes and different roles. Lots of very interesting ideas, very hard to prove one hypothesis over another.

# data[].attributes.body
Who discovered there are 37 trillion cells in a human?
That is a very rough estimate. I routinely see estimates anywhere between 10 trillion and 200 trillion. 100 trillion seems pretty common.

# data[].attributes.body
A variety of things - mostly water but with enough other stuff to make to viscous (gooey instead of watery). There are proteins, ions (salts), dissolved molecules, etc

# data[].attributes.body
Are cancer cells a form of prokaryotic cells?

No, they are normal cells that go crazy. They divide all the time instead of working, don't follow normal rules of organization, and have forgotten how to die.

# data[].attributes.body
Why do people think that Rudolf Virchow stole his idea from Robert Remak

They have older writings of Remak before Virchow shared "his ideas" with Schleiden and Schwann. There may also have been some ugly anti-semitism involved (Remak was Jewish).

# data[].attributes.body
What does the inside of an Achaean look like
Same as a bacterium.