Search found 82 matches

by Adz795
Sun Sep 11, 2011 5:14 pm
Forum: Botany Discussion
Topic: Help in identifying growth
Replies: 3
Views: 3855

Re: Help in identifying growth

alrazi wrote:u say that grows underwater than i m sure it is chara a member of familly characeae


Alrazi, how did you identify it as a Chara? I would like to know please.
My guess was a Chlorophyte (green alga).
by Adz795
Sun Sep 11, 2011 5:08 pm
Forum: Cell Biology
Topic: Permanent slide cells
Replies: 4
Views: 5772

Yea, I just meant those kind of slides! Okay. I don't think 'dead' would be an appropriate word. I think they're sort of 'frozen' in time, since they carry out no activity ie zero metabolism. Dead would probably imply apoptosis. I don't know if I am correct. What if you keep the cells in an aqueous ...
by Adz795
Sun Sep 11, 2011 7:38 am
Forum: Cell Biology
Topic: Permanent slide cells
Replies: 4
Views: 5772

Permanent slide cells

The stained cells in a permanent slide, are they alive or dead..? or are they simply arrested in that state?

I've never made a permanent slide, hence I wonder what the case is.
by Adz795
Sat Sep 10, 2011 7:25 pm
Forum: Cell Biology
Topic: Immortality == Cancer?
Replies: 5
Views: 6194

=)
What you say seems like fantasy to me.
Your question is innocent. But, let me tell you such a thing would most likely be impossible. We cannot make all our cells cancerous just because we may fancy immortality.

Anyway, nice thought!
by Adz795
Fri Sep 09, 2011 7:52 am
Forum: Cell Biology
Topic: Chloroplast
Replies: 5
Views: 4888

Re: Chloroplast

Thanks a lot sdolson!

That was exactly what I wanted!
by Adz795
Wed Sep 07, 2011 11:46 am
Forum: Cell Biology
Topic: Chloroplast
Replies: 5
Views: 4888

Chloroplast

Is the chloroplast, in any way, associated with lipids?
by Adz795
Wed Sep 07, 2011 11:43 am
Forum: Microbiology
Topic: Multicellular prokaryote
Replies: 28
Views: 77398

Multicellular prokaryote

Now this is an innocent question.
Do you know of a multicellular prokaryote?
by Adz795
Wed Sep 07, 2011 11:39 am
Forum: Cell Biology
Topic: Centrosome
Replies: 2
Views: 6816

Thank you, that link was really good!

My question was essentially the significance of a centrosome.
by Adz795
Wed Sep 07, 2011 11:34 am
Forum: Cell Biology
Topic: Nucleolus
Replies: 5
Views: 10576

Thank you everybody!
Your help is much appreciated.

Talcen, are you sure the nucleolus assembles the ribosomal subunits? I think that is done in the cytoplasm.
by Adz795
Mon Sep 05, 2011 2:24 pm
Forum: Cell Biology
Topic: Nucleolus
Replies: 5
Views: 10576

Nucleolus

Please tell me the significance of the nucleolus, besides the fact that it manufactures the ribosomal subunits.

-Why is it that the nucleolus appears very dark in transmission electron micrographs?
Does it have heterochromatin? Does it even have DNA?

Thanks.
by Adz795
Mon Sep 05, 2011 2:18 pm
Forum: Cell Biology
Topic: Centrosome
Replies: 2
Views: 6816

Centrosome

-What is the significance of a centrosome? A plant cell can live without a centrosome. And in animal cells too centrosomes are not required for spindle formation during cell division. -What do they specifically do as microtubule organizing centres? Also in a human ovum (secondary oocyte) a pair of c...
by Adz795
Fri Aug 26, 2011 5:35 am
Forum: Human Biology
Topic: Mitochondrial inheritance
Replies: 3
Views: 5345

Mitochondrial inheritance

I have read that the mitochondria of a zygote are all of maternal origin. Therefore, mitochondrial genes come from the mother. But, during fertilization the sperm has, in the middle piece, some mitochondria. Don't they get into the ovum and hence in the zygote? The tail piece of the sperm does not e...