Search found 82 matches

by Adz795
Tue Sep 20, 2011 4:32 pm
Forum: Human Biology
Topic: When is the brain considered fully developed?
Replies: 4
Views: 4184

The human brain fully develops by the age of six. After that the brain does not grow or develop though new neural circuits may form or break relating to the amount of learning that takes place or memories that form.
by Adz795
Thu Sep 15, 2011 1:55 pm
Forum: Molecular Biology
Topic: Derived proteins
Replies: 3
Views: 4232

Derived proteins are a type of proteins, others being simple proteins and conjugated proteins.
I don't quite understand this group of proteins called derived proteins. I read about them but I would like to hear it from someone who knows better about this type.
by Adz795
Thu Sep 15, 2011 7:49 am
Forum: Molecular Biology
Topic: Derived proteins
Replies: 3
Views: 4232

Derived proteins

Can anyone explain me about 'Derived proteins'?
I have read a lot but the concept doesn't quite fit in.
First of all, proteoses are simple proteins, right? and polypeptides are derived? How does that make sense? I don't understand.
by Adz795
Thu Sep 15, 2011 7:39 am
Forum: Molecular Biology
Topic: How does phospholipids aid the cell and the rest of the body
Replies: 7
Views: 11195

I speculate the following: If the cell membrane is torn really badly then there would be an exchange of contents (of the cell and outside) to what extent depending on the gradients of various substances. If there is a split in the membrane, the phospholipids should almost immediately patch up becaus...
by Adz795
Thu Sep 15, 2011 7:25 am
Forum: Molecular Biology
Topic: How does phospholipids aid the cell and the rest of the body
Replies: 7
Views: 11195

I suppose the integral proteins are simply suspended in the phospholipid bilayer. They are, in a way, floating there held by hydrophobic and hydrophilic interactions. You see the region of the integral protein that is surrounded by the hydrophobic fatty acid 'tails' is itself hydrophobic. So the hyd...
by Adz795
Thu Sep 15, 2011 6:58 am
Forum: Molecular Biology
Topic: Nucleic 'acids'
Replies: 5
Views: 6858

I am so sorry, I confused with the acid/base theory.

Thanks a lot for the explanation!
by Adz795
Tue Sep 13, 2011 7:56 pm
Forum: Molecular Biology
Topic: Relationship between structure and function of glucoes
Replies: 12
Views: 26571

Yes, that's just the correction I thought of.
Thanks so much! Feels good to be clear about it.
by Adz795
Tue Sep 13, 2011 5:16 pm
Forum: Molecular Biology
Topic: Relationship between structure and function of glucoes
Replies: 12
Views: 26571

Oh yes! What a confusion I caused! The difference in L-, D- properties would, in no way, originate from linking patterns (like in the case of α vs. β D-glucose). It would have to, as Jonmoulton speculated, originate from the fact that they are mirror images of each other. The reason for differences ...
by Adz795
Tue Sep 13, 2011 4:20 pm
Forum: Molecular Biology
Topic: Nucleic 'acids'
Replies: 5
Views: 6858

You mean the hydrogen accepting power(ie the negative charge) of the phosphates alone confers the name 'acids' to the molecules?
I had thought of it.. I wanted some confirmation.
by Adz795
Tue Sep 13, 2011 12:59 pm
Forum: Molecular Biology
Topic: Nucleic 'acids'
Replies: 5
Views: 6858

Nucleic 'acids'

I have 2 questions regarding nucleic acids.

1) Why are nucleic acids called nucleic 'acids'. As far as I know, they don't have a -COOH group neither do they accept hydrogen.

2) Are there any other types of nucleic acid molecules besides DNA and RNA and their subtypes?
by Adz795
Tue Sep 13, 2011 12:53 pm
Forum: Molecular Biology
Topic: Relationship between structure and function of glucoes
Replies: 12
Views: 26571

Is there a possibility that the enzymes are specialized only for utilizing α-D-glucose and not its epimers like mannose,etc.? Is the reason for us being composed of L-amino acids similar to the reason for α-D-glucose to form glycogen and not cellulose (ie because of it's ability to link and cross-li...
by Adz795
Mon Sep 12, 2011 8:50 am
Forum: Cell Biology
Topic: Permanent slide cells
Replies: 4
Views: 5767

So, they are irreparably ruined and shown to us. lol
Now, I understand.
Thanks a lot!