Bobr

I cannot see the reason why it should, but I may be wrong. In that case, I would like to know why

it's in the name, basically. pump is actively pumping something, even if the concentration on the target side of membrane is higher than on the other; carrier only facilitates concentration - based transport.

It serves as a some kind of "handle" for enzymes. I mean, there is a common conserved domain among enzymes using adenosine cofactors (ATP, FAD, NAD etc.) called "nucleotide - binding fold". It binds to adenine or adenosine, respectively. So basically, adenosine part serves as a not-so-specific handle of the cofactor and the active part (nicotinamide, for example) ensures the specifity part of reaction. The reason for this is that nature can design lot of different proteins with specifity to different cofactor just using this single protein fold.

wikiro, in this case I would suggest something else than "pure biochemistry" textbook. I´m thinking of Genes (Lewin) or some other molecular biology texts (Molecular Cell Biology - Lodish is in my opinion by far the best book in this pool). Just be careful to get the newest edition, these things are changing day to day.

The original Voet & Voet: Biochemistry (3rd edition) is in an excellent book, I own it myself. I didn´t read The fundamentals, however, so I can´t tell you how much different they are. Also I can recommend Lehninger: Principles of Biochemistry. Stryer is very good as well.

RNAi serves basicly for recognition of viral dsRNA. Normally, there´s no dsRNA in cells, and when it appears, it´s a sign that we have a company. So it´s more like antiviral defense, which is now used for experiments with cellular genes.

Hi there. Student of Molecular Biology at Charles University, Prague. Glad to be here.

well, you have percentage of adenine. from which you can assume directly the percentage of adenine pairing mate. the rest would be the others.