Search found 160 matches

by Jelanen
Fri Dec 02, 2005 3:28 pm
Forum: Molecular Biology
Topic: Which came first the DNA, RNA or protein
Replies: 64
Views: 74614

Speculation is that RNA was first since RNA does all the really cool RNA things and it can also be information storage like DNA.

-Jelanen
by Jelanen
Fri Dec 02, 2005 3:26 pm
Forum: Molecular Biology
Topic: Genes and Proteins
Replies: 10
Views: 6322

Introns- IN tervening sequences. Thats how I always keep the bloody things defined in my all to addled brain. Its important to note that defining introns and exons are protein specific. Frame shifting or alternate initiation sites may change what is an intron and what is an exon. And yes, I'm still ...
by Jelanen
Mon Oct 24, 2005 10:34 pm
Forum: General Discussion
Topic: frozen water expansion
Replies: 11
Views: 8491

It would be tough for marine and freshwater life to survive since floating ice has insulating properties on the body of water over which it floats. Ice that sinks would push fish higher and higher into colder and colder water that would kill them. Thats just one thing, I'm sure there are other advan...
by Jelanen
Mon Oct 24, 2005 2:13 pm
Forum: Molecular Biology
Topic: Help with mRNA purification and DNA polymerase!
Replies: 8
Views: 7067

Whoa..thats awesome...

-Jel
by Jelanen
Mon Oct 03, 2005 1:32 pm
Forum: General Discussion
Topic: how does cardiovascular maintain homeostasis
Replies: 2
Views: 3020

Also, you need to clarify exactly what trait of the cardiovascular system the question is asking about. Is it blood pressure? RBC content? The cardiovascular system does alot of stuff and it would be a very long essay indeed if you had to look into the homeostasis of every item.

-Jelanen
by Jelanen
Thu Sep 29, 2005 7:01 pm
Forum: Molecular Biology
Topic: enzymes
Replies: 11
Views: 5695

No, reread the posts above and you'll see that whether you can regain enzyme activity after denaturization depends on what the active energy state of the enzyme is. If the active conformation is also the lowest energy state, then you have a better chance of regaining activity. The enzyme might also ...
by Jelanen
Tue Sep 27, 2005 9:12 pm
Forum: Molecular Biology
Topic: dehydration and hydrolysis reactions
Replies: 14
Views: 46543

Yeah, your answers look good though I don't completely understand the second question since its a fairly complex pathway to go from just a hydrocarbon (acetyl in the case of most organisms) to a monosaccharide...

-Jelanen
by Jelanen
Tue Sep 27, 2005 9:03 pm
Forum: Molecular Biology
Topic: enzymes
Replies: 11
Views: 5695

Einstein said TIME is relative to the observer. Totally off topic, but cool story: When the US developed and implemented GPS satellites, they couldn't get an accurate location determination, they were off by hundreds of meters. Some too-smart-guy decided to add in equations dealing with relativity.....
by Jelanen
Sun Sep 25, 2005 1:26 am
Forum: Molecular Biology
Topic: different between NADPH+H, NAD and NADPH
Replies: 1
Views: 2219

Do searches for NAD and NADPH. The short answer is that NAD is generally used in degrative pathways while NADPH is generally used in constructive pathways.
As for the definition of oxidative phosphorylation, look in the dictionary at the top right of your screen.

-Jelanen
by Jelanen
Sun Sep 25, 2005 1:08 am
Forum: General Discussion
Topic: benefits of leucine rich domain
Replies: 1
Views: 1810

Leucine rich domains on a protein provide a hydrophobic patch or area that can interact with other hydrophobic stuff (technical term there) in the cell like interior parts of membranes, lipids, cholesterols, etc. Leucine rich domains will also affect the secondary and tertiary structures of the prot...
by Jelanen
Sun Sep 25, 2005 1:01 am
Forum: Molecular Biology
Topic: enzymes
Replies: 11
Views: 5695

That is not entirely accurate. If the lowest energy state of the protein is also its functional configuration, then denatureing will only inactivate the protein while it is in the unfavorable condition. If you return the protein to a favorable condition, it will (hopefully) assume the lowest energy ...
by Jelanen
Tue Aug 30, 2005 1:28 am
Forum: Genetics
Topic: Advantageous Mutations
Replies: 11
Views: 20760

Argh! This topic has reared its head again!! *runs away*

-Jelanen