Search found 778 matches

by biohazard
Wed Oct 03, 2012 6:00 am
Forum: Physiology
Topic: cellular event of cardiac tissue with temperature
Replies: 3
Views: 4692

If the cardiac cell's temperature rises from 20 degrees to 30 its enzymatic reactions become faster and metabolism increases. If it then gets lowered to 10 degrees, the opposite will happen. This applies to pretty much all events within the cell. The physiological temperature of a (human) cardiac ce...
by biohazard
Tue Oct 02, 2012 10:56 am
Forum: Physiology
Topic: cellular event of cardiac tissue with temperature
Replies: 3
Views: 4692

Uh, by any chance could you be bit more specific? How much the temperature changes? Are we talking about a physiological event or temperature change caused by external factors? Virtually all enzymatic reactions are affected when the temperature changes more than a degree or two, so you could name an...
by biohazard
Fri Sep 28, 2012 6:31 am
Forum: Human Biology
Topic: Blue Blood For A Science Project
Replies: 13
Views: 11898

I'm glad if I was able to help! And as a funny coincidence, I ran a gel electrophoresis sample the other day (a very basic procedure in molecular biology), and I was being a bit absent-minded and managed to connect the electrodes in a wrong way - and because the electron flow goes to the "oppos...
by biohazard
Thu Sep 27, 2012 9:08 am
Forum: Human Biology
Topic: Blue Blood For A Science Project
Replies: 13
Views: 11898

The effect of oxygen on blood is easy to check with modern evacuated blood collection tubes: simply draw a sample of venous blood (low on oxygen, deep red) and open the cap of the tube to see if exposure to oxygen changes it. And for comparison, mistakenly hit an artery when taking the sample to see...
by biohazard
Wed Sep 12, 2012 9:13 am
Forum: Molecular Biology
Topic: Mushrooms
Replies: 2
Views: 3006

I don't think pulling mushrooms out of the ground has much effect on them, since like you said they have hyphae (="filaments") that grow under the ground. In many places the soil contains huge masses of fungal hyphae, so plucking few of the fruiting bodies does not get you rid of the fungus.
by biohazard
Wed Sep 12, 2012 9:01 am
Forum: Evolution
Topic: Why do you believe in Neo-Darwinian Theory?
Replies: 13
Views: 14438

1. It is supported by overwhelming evidence.

2. Dogs.
by biohazard
Mon Aug 27, 2012 9:08 am
Forum: Microbiology
Topic: Black coloration of sheep blood agar
Replies: 3
Views: 11927

Sorry, I don't have any specific references at hand currently.
by biohazard
Wed Aug 22, 2012 11:27 am
Forum: Microbiology
Topic: Black coloration of sheep blood agar
Replies: 3
Views: 11927

Hmmh... as far as I can tell that looks quite normal non-hemolytic growth typical to Bacillus species, though the angle and light are not ideal for spotting it. I am not sure what causes the darker coloration of the agar (I'd call it deep red rather than black from what I see), but it is a common ph...
by biohazard
Mon Aug 20, 2012 12:22 pm
Forum: Human Biology
Topic: Can you gain more weight than the food you ate weighs?
Replies: 13
Views: 46637

^ Amen.
by biohazard
Thu Aug 16, 2012 12:32 pm
Forum: Microbiology
Topic: What is a Bioreactor?
Replies: 4
Views: 8600

Re:

Josiah2511 wrote:Its a small but modernized fermentor mostly made of or part of which is made from stainless steel.


Except that it is not necessarily small and it does not necessarily ferment anything...
by biohazard
Wed Jun 13, 2012 7:17 am
Forum: Cell Biology
Topic: Proliferation assay
Replies: 7
Views: 15461

How does the single peak relate to your negative control? Do all your cells have full or lowered CFSE intensity? Does the intensity go down each day? Having too much CFSE should not be the cause, because even high concentrations diminish quickly due to the cell divisions. In my experience, high CFSE...
by biohazard
Tue Jun 12, 2012 6:08 am
Forum: Zoology Discussion
Topic: Cone snail
Replies: 4
Views: 10008

Yeah, that brown structure is the "spike" I'm talking about. My best guess is that it is part of the animal's foot, perhaps the end of it has evolved to form such a structure that is visible in the picture. It is not part of the shell, as far as I know. Heck, I should've dissected one to f...