The Mad Scientist

Friday, 22 July 2005

Eye Candy & Quiz
Topic: Biology

Well I was taking some phase pictures of hepatocytes (liver cells) that we plated on a collagen coated coverslip - nice cells, if I do say so myself. To the left is an image of a hepathocyte (or part of a hepathocyte), all those lines and squiggles being organelles ... compartments where specialized cellular functions take place.

So here is your quiz ...

What is organelle A (the big round slightly out-of-focus thing)?
What is organelle B (the dark dots)?
What is organelle C (the long squiggles)?

And finally, which of these organelles contains DNA?

Funny thing is that I just noticed the question mark in side of organelle A ...

Good luck!

Posted by madscientist39 at 10:16 PM EDT

Updated: Friday, 22 July 2005 10:18 PM EDT

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Wednesday, 24 August 2005 - 9:29 AM EDT

Name: r2d3

Organelle A is clearly the nucleus.

Organelle C (according to one source) is a mitochondrion.
(http://madscientist39.tripod.com/rant/index.blog?entry_id=1187449)

all that's left is Organelle B ... well researching on the web I discovered this site:

http://www.borg.com/~lubehawk/cell.htm

http://www.borg.com/~lubehawk/cell.htm#ancell_dia_ans

so I would guess that organelle B is a lysosome

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Wednesday, 24 August 2005 - 9:33 AM EDT

Name: r2d3

Second part of the question is with regards to DNA content ...

So both Organelles A and C have DNA.

I don't think that organelle B has DNA, although in old transfection protocols we would treat our cells with lysosome inhibitors, to prevent the cells from degrading the transfected DNA. So I guess there could be DNA in organelle B.

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Wednesday, 24 August 2005 - 10:34 AM EDT

Name: madscientist39

Good job!

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