Fortissimo

Thanks. You cleared that up really nicely.

I was wondering........DNA is touted as being the master substance to identify idividuals but it has a variance of only FOUR different components, C G A and T. How does this get arranged so that every individual organism has a different arrangement. Secondly the genetic code is degenerate, yes? But is there any other advantage of this besides that any effect of a mutation is ameliorated? Thanks people.

ok thanks pple

Guys I've searched and searched but I havent found what I've been looking for. What are the individual roles of the different amino acids found in enzymes, i.e. how do they aid catalysis. I know the basic Nitrogen of histidine is used to abstract a proton from serine, threonine or cysteine to activate it as a nucleophile but I dont even understand how that helps in catalysis! Not to talk of the other 19 amino acids. I need help people. Thanks.

Guys I'm doing an introduction to statistics course and I'm sort of stumped. I can manage the calculation aspect as its more straight forward but when u have to prove stuff, I'm hopeless. Any help with this please, Prove that if event A and event B are not mutually exclusive, then P(A or B) = P(AUB) = P(A) + P(B) - P(AnB) Would appreciate any help. Thanks.

Some sources however say 2.5 ATP are produced per NADH and 1.5ATP per FADH2. I dont think your last post about help with an exam will be attended to, though.

Yeah I know all that but in oxidative phosphorylation, isn't a molecule of water formed per condensation of ADP and inorganic P?

Could someone explain to me how the total number of molecules of water produced for the complete oxidation of palmitoyl coA to water and CO2 is calculated?

Dont they just inhibit enzymes? take for example, the flox drugs, Cipro, levo etc. they inhibit dna gyrase which stops bax from multiplying. most bacteria have similar enzymes i guess.

Isn't the poster asking how alcohol fermentation is beneficial to the yeast? It allows the yeast to survive(for a while at least) in anaerobic conditions. Analogous to lactic acid in humans.

err bignose how did u get that maths expert note after your name?

In a hospital lab, a 10mL sample of gastric juice, obtained several hours after a meal, was titrated with a 0.1M NaOH to neutrality; 7.2mL of NaOH was required. The patients stomach contained no ingested food or drink, so it is assumed that no buffers were present. What was the pH of the gastric juice? I know it sounds really simple but I'm totally stumped. Could someone point me in the right direction?

but isnt it light that actually lets us confirm that a substance is chiral?