Organisms-living?or also non-living?

Debate and discussion of any biological questions not pertaining to a particular topic.

Moderators: honeev, Leonid, amiradm, BioTeam

Post Reply
Miko
Garter
Garter
Posts: 17
Joined: Wed Mar 09, 2005 10:15 pm

Organisms-living?or also non-living?

Post by Miko » Mon Aug 08, 2005 2:19 am

I know this sounds fairly simple . . . but are organisms living things only? Are there non-living organisms? (I really don't remember)

Oh! one more question . . . I understand that macromolecules are molecules that are linked together like atoms link together and form molecules, but are all organisms made of all or one of each macromolecule: carbohydrates, lipids, proteins, and nucleic acids :?:

Thanks!

User avatar
victor
King Cobra
King Cobra
Posts: 2668
Joined: Sat Apr 30, 2005 12:01 pm
Location: Yogyakarta, Indonesia..
Contact:

Post by victor » Mon Aug 08, 2005 11:27 am

As it stated in my microbiology book, then I will say it. There are living organisms and non-living organisms.
Living organisms: Procaryotes, Archaeans and Eukaryotes.
Non-living organisms: Virii and Prion.

For the 2nd question, let's take the most simple living organism, procaryotes. We know that Procaryotes have Nucleic acid in their chromosomes, lipid bilayer as their membranes, carbohydrates as their inner substances, and proteins as the structure former (such as peptidoglycane, etc.). From the writting above, we can conclude that all living organisms are formed from those 4 organic macromolecules and don't forget that there're also inorganic substances which take part also...
Q: Why are chemists great for solving problems?
A: They have all the solutions.

User avatar
chemistry_freako
Coral
Coral
Posts: 193
Joined: Wed Jun 08, 2005 3:31 pm
Location: Somewhere between those molecules
Contact:

Post by chemistry_freako » Mon Aug 08, 2005 1:50 pm

Yea - molecules are the 'building blocks' of so many things =D
化学は、最高です

Image

User avatar
Dr.Stein
King Cobra
King Cobra
Posts: 3501
Joined: Thu Jul 07, 2005 7:58 am
Location: 55284 Yogyakarta, Indonesia
Contact:

Post by Dr.Stein » Mon Aug 08, 2005 2:23 pm

Hint: Urey/Oparin's theory of the origin of life :wink:
Image

User avatar
MrMistery
Inland Taipan
Inland Taipan
Posts: 6832
Joined: Thu Mar 03, 2005 10:18 pm
Location: Romania(small and unimportant country)
Contact:

Post by MrMistery » Tue Aug 09, 2005 8:21 pm

i am sorry to dissapoint you victor but organism basically means "living thing".
The only organisms are Archea, Eubacteria and Eukarya
Virii are named infectious entites, just to show that they are not living and can not be called organisms. they are considered to be at the border between living and non-living
Prions are considered non-living because they do not have nucleic acids, they are simply proteins. therefore you can not call them living
Cheers
*it's good to be back*
"As a biologist, I firmly believe that when you're dead, you're dead. Except for what you live behind in history. That's the only afterlife" - J. Craig Venter

Miko
Garter
Garter
Posts: 17
Joined: Wed Mar 09, 2005 10:15 pm

Organisms-Living/Nonliving

Post by Miko » Fri Aug 12, 2005 2:18 am

Thank you all for your response. My conclusion based on the responses are: only things that are living are considered "organisms" since organism means living thing.

I also understand that every organism consist of the four macromolecules: carbohydrates, proteins, lipids, and nucleic acids.

Thanks . . . :wink:

User avatar
canalon
Inland Taipan
Inland Taipan
Posts: 3909
Joined: Thu Feb 03, 2005 2:46 pm
Location: Canada

Re: Organisms-Living/Nonliving

Post by canalon » Fri Aug 12, 2005 3:05 am

Miko wrote:I also understand that every organism consist of the four macromolecules: carbohydrates, proteins, lipids, and nucleic acids.


I wouldn't say that... It's an oversimplification.
Carbohydrates, proteins, lipids and nucleic acids are four families, classes, "whatever you want to call that" of macromolecules (which means nothing more than "big molecules"). But in each of these families there is plenty of different molecules which are all macromolecules. And all macromolecules do not necessarily belong to those 4 families...

Cheers

Patrick

User avatar
chemistry_freako
Coral
Coral
Posts: 193
Joined: Wed Jun 08, 2005 3:31 pm
Location: Somewhere between those molecules
Contact:

Post by chemistry_freako » Fri Aug 12, 2005 3:41 am

yea- it's just a generalisation~ :)
化学は、最高です

Image

User avatar
Dr.Stein
King Cobra
King Cobra
Posts: 3501
Joined: Thu Jul 07, 2005 7:58 am
Location: 55284 Yogyakarta, Indonesia
Contact:

Post by Dr.Stein » Fri Aug 12, 2005 4:47 am

What about this? Living thing or organism is constructed from organic molecules including C, H, O, and N... :roll: Awawwawaa maybe a bad idea eh? I cannot think properly today :( :lol:
Image

User avatar
victor
King Cobra
King Cobra
Posts: 2668
Joined: Sat Apr 30, 2005 12:01 pm
Location: Yogyakarta, Indonesia..
Contact:

Post by victor » Mon Aug 15, 2005 11:59 am

Hmm...I've just read the front page of biochemistry and I found that some amino acids such as cysteine makes a link with another Cysteine with a disulfide bond.....so, I think S also included in that.. :lol:
Q: Why are chemists great for solving problems?
A: They have all the solutions.

User avatar
chemistry_freako
Coral
Coral
Posts: 193
Joined: Wed Jun 08, 2005 3:31 pm
Location: Somewhere between those molecules
Contact:

Post by chemistry_freako » Mon Aug 15, 2005 1:13 pm

haha yea..think of rebonding when u think about cystein =)
化学は、最高です

Image

Post Reply

Who is online

Users browsing this forum: Bing [Bot] and 15 guests