Search found 232 matches

by Navin
Tue Feb 27, 2007 3:11 pm
Forum: Botany Discussion
Topic: Smallest Gametophyte?
Replies: 3
Views: 4862

Smallest Gametophyte?

I have learnt that a characteristic in spermatophytes (the seed plants) is a "reduced gametophyte". The male gametophyte is basically found in the germinating pollen grain, whilst the female gametophyte is found in a mature ovule. My question is, generally speaking, where would I find the ...
by Navin
Thu Oct 05, 2006 5:13 am
Forum: Cell Biology
Topic: Stem cells
Replies: 3
Views: 2391

If stem cells can grow indefinitely - then they would not need to obtain anymore stem cells. Right or wrong?
by Navin
Wed Oct 04, 2006 12:51 pm
Forum: Cell Biology
Topic: Stem cells
Replies: 3
Views: 2391

Stem cells

Can stem cells grow and replicate indefinitely under laboratory conditions? Or will they specialize into a specific cell line? I'm a tad bit confused because I read that stem cells can divide under laboratory conditions indefinitetly. But if they specialize into a specific cell line - then isn't tha...
by Navin
Wed Sep 27, 2006 9:47 am
Forum: Genetics
Topic: DNA = Chromosome
Replies: 92
Views: 100517

I define a DNA molecule as a double stranded molecule. Hence I would say that there are 46 DNA molecules in a human cell.
by Navin
Wed Sep 06, 2006 11:09 am
Forum: General Discussion
Topic: A-Levels hardest and easiest biology topic(s)
Replies: 5
Views: 3241

The thing is that I'm only familiar with Singapore-Cambridge GCE A Levels.
From this year onwards our syllabus is very much focussed on Life Sciences.

We are learning mostly about molecular genetics and certain aspects of ecology.

Is your syllabus like this?
by Navin
Tue Sep 05, 2006 7:25 am
Forum: General Discussion
Topic: A-Levels hardest and easiest biology topic(s)
Replies: 5
Views: 3241

What A level are you taking, which country?
by Navin
Thu Aug 31, 2006 9:31 am
Forum: General Discussion
Topic: Help on GCSE biology
Replies: 5
Views: 5262

Ah yes. The most important is the syllabus. Follow that very well, ya.
by Navin
Tue Aug 29, 2006 3:07 pm
Forum: Botany Discussion
Topic: What is this?
Replies: 8
Views: 5737

Just to clearify one thing, this down here is the picture that was posted.

The picture you see in my earlier post was from google images (just to show the resemblance).
by Navin
Tue Aug 29, 2006 3:43 am
Forum: Botany Discussion
Topic: What is this?
Replies: 8
Views: 5737

Looks like a phallus fungi to me.

In fact i think its the red stinkhorn fungi.
by Navin
Tue Aug 22, 2006 1:13 pm
Forum: Botany Discussion
Topic: Preserving Plant Specimens
Replies: 3
Views: 2537

Thanks Linn.

Just to let you guys know, I also have started a press collection.
Have a look at one of my specimens.
by Navin
Thu Aug 10, 2006 1:34 pm
Forum: Human Biology
Topic: Blood is always red, never blue.
Replies: 57
Views: 405902

I think that this general misconception derives from within many of our textbooks . If you look under the circulatory system section, you would find figures of the circulatory system where oxygenated blood is represented in red , whilst deoxygenated blood is represented in blue . (This is of course ...
by Navin
Wed Aug 09, 2006 8:17 am
Forum: Botany Discussion
Topic: Solanum macranthum: Flowers with different colours?
Replies: 2
Views: 3060

Solanum macranthum: Flowers with different colours?

I was walking around in school when I came across this plant which I identified as Solanum macranthum or also known as Giant Star Potato Tree. I think it belongs to the same family as the eggplant or aubergine. I found it had interestingly shaped leaves but the unique thing was that it had clusters ...