Search found 2072 matches

by victor
Mon Nov 19, 2007 12:16 pm
Forum: Microbiology
Topic: bacteria vs. archaea
Replies: 4
Views: 43876

hey, is it true that some bacteria now have organelles?
by victor
Sun Nov 18, 2007 2:19 am
Forum: Molecular Biology
Topic: Questions about Enzymes
Replies: 7
Views: 10363

Thank you for explanation. Which answers do you think are correct ones? 1). E 2). D Umm...for number 2, I think that the answer is B. Because, even though A is likely the correct answer, I think that enzyme is not the only catalyst in all chemical reaction (you can add some metal which acts like ca...
by victor
Sat Nov 17, 2007 11:45 am
Forum: Molecular Biology
Topic: Questions about Enzymes
Replies: 7
Views: 10363

what the option C means is that the reaction is endergonic (requires free energy to proceed). Actually, the things happen in the tube with enzyme is that the substrate is in the metastable state, that is the substrate is thermodynamically favored to react but can't react unless there's an addition o...
by victor
Sat Nov 17, 2007 12:03 am
Forum: General Discussion
Topic: Pasteur effect
Replies: 1
Views: 2961

Pasteur effect is shown when you grow a facultatively anaerobic organism in an anaerobic condition. When you move that organism into an aerobic condition, you'll get a result that the glucose consumption will get decreased compared to another organism which is not grown in an anerobic condition befo...
by victor
Wed Nov 07, 2007 11:01 pm
Forum: Human Biology
Topic: does heart ever rest?
Replies: 3
Views: 7096

yeah, I think also that heart never 'rest', if you define rest is kinda like sleeping. I also think that heart only rest when we also get rest....in peace... :lol:
by victor
Wed Nov 07, 2007 10:56 pm
Forum: Human Biology
Topic: does eating too much sweets cause diabetes?
Replies: 17
Views: 42798

I ever read an article that when pancreas (the beta-cell) is forced to synthesize so much insulin, they will die slowly because too many reactive oxigen species inside those cells. I think it's because of they overmetabolze the insulin.
by victor
Mon Nov 05, 2007 10:48 pm
Forum: Molecular Biology
Topic: Bye-bye solenoid. Or so it seems
Replies: 1
Views: 1787

Umm...I've found this and maybe it can help 1. The Three-Dimensional Structure of Human Interphase Chromosomes is Related to The Transcriptome Map 2. Generic Features of Tertiary Chromatin Structure as Detected in Natural Chromosomes 3. [url=http://mcb.asm.org/cgi/reprint/23/15/5234?maxtoshow=&H...
by victor
Sun Nov 04, 2007 8:55 pm
Forum: Cell Biology
Topic: Effect of ethanol on proteins
Replies: 7
Views: 10682

Beside denatures the protein, ethanol (>95%) dehydrates the protein, so making the protein get suspended.
by victor
Sun Nov 04, 2007 8:52 pm
Forum: Cell Biology
Topic: Cellular respiration
Replies: 8
Views: 4136

maybe the foods don't turn into oxygen but they're turned towards oxygen in aerobic cellular respiration.
by victor
Sun Nov 04, 2007 2:31 am
Forum: Microbiology
Topic: Identfying Bacteria From Pictures
Replies: 11
Views: 16144

wow, you are a plate master, Canalon :wow:
by victor
Sat Nov 03, 2007 5:40 am
Forum: Microbiology
Topic: Identfying Bacteria From Pictures
Replies: 11
Views: 16144

I think you can't determine the genus of these bacteria if you only have these two photos. At least you have to do several cultural, staining and biochemical tests to ensure which genus do these two bacteria belong...
have you provide the characterization processes on these two?
by victor
Sat Nov 03, 2007 5:25 am
Forum: Molecular Biology
Topic: Difference: Hydrogen, Hydronium, Proton
Replies: 2
Views: 4499

I can think like this: The pH of pure water is 7.0. It means that ions which compose water molecule (H+ and OH-) is combining altogeter forming a structure called as H2O. An addition of H+ ion to a pure water, i.e. from HCl solution, would make the concentration of H+ is excessive (depends on the vo...