Dictionary » H » Heme


A complex red organic pigment containing iron and other atoms to which oxygen binds.

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Things that cause cancer (in modern humans who live longer)

... contains several substances that can indeed be harmful in higher concentrations that is not present in poultry or fish. Some studies indicate that heme iron, for example, could be one of these (even though iron is essential for humans, high intake of heme iron from diet for prolonged periods can ...

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by biohazard
Thu Nov 01, 2012 7:11 am
Forum: Evolution
Topic: Things that cause cancer (in modern humans who live longer)
Replies: 4
Views: 5280

speed of osmosis?

you mean if you compare e.g. Na+ and say heme? Yes.

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by JackBean
Tue Jan 31, 2012 8:36 am
Forum: General Discussion
Topic: speed of osmosis?
Replies: 8
Views: 5512

It is going to kill me

... not necessarily able to grow on minimum media. They might need other things present in soil on top of your carbon source to grow (iron, maybe as heme; Nitrogen source; whatever else) 3- You are working with soil bacteria, aeration is not continuous and even in surface soil there are plenty of ...

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by canalon
Thu Jul 07, 2011 4:26 pm
Forum: Microbiology
Topic: It is going to kill me
Replies: 7
Views: 3147

Porphyrias and hemoglobin

... about porphyrias and after that I have studied the pathogenesis and biochemistry of this illness. I know that it is a metabolic disorder in heme synthesis. But what I really want to know is how this people have hemoglobins at all, if they can not synthesize the heme? Feel free you can explain ...

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by jakov03
Tue Oct 26, 2010 9:59 pm
Forum: Human Biology
Topic: Porphyrias and hemoglobin
Replies: 1
Views: 1923

enzyme activity laboration

... will act as a noncompetitive inhibitor on catalase. Also, the poison cyanide is a competitive inhibitor of catalase, strongly binding to the heme of catalase and stopping the enzyme's action. but it didnt look like it inhibited the enzymes action in our experiment. And i was wondering how ...

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by Zamzen
Wed Sep 22, 2010 6:15 pm
Forum: Cell Biology
Topic: enzyme activity laboration
Replies: 5
Views: 10549
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