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Oxygen-15

oxygen-15

A cyclotron-produced, positron-emitting radioisotope of oxygen with a half-life of 122.2 seconds; used in studies of respiratory function and in positron emission tomography.


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Electron transport chain

The electrons are passed through molecules in the membrane, so the oxygen is not much accessible to them.

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by JackBean
Wed Jun 25, 2014 12:19 pm
 
Forum: Cell Biology
Topic: Electron transport chain
Replies: 3
Views: 534

Electron transport chain

Electrons are finally accepted by oxygen at the end of the electron transport chain. Is oxygen is accessible to the electrons in intermediate electron carriers? If so why electron is not accepted by oxygen at intermediate steps?

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by josem
Sun Jun 22, 2014 1:28 am
 
Forum: Cell Biology
Topic: Electron transport chain
Replies: 3
Views: 534

reproductive sytem

... all body systems, is interlinked. The first part of the questions might throw you off a bit. Start by thinking big. Everything in the body needs oxygen and a blood supply, both of which link to the circulatory and respiratory systems. Whilst parts are autonomous the vast majority requires messages ...

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by Babybel56
Fri Feb 28, 2014 8:49 am
 
Forum: Molecular Biology
Topic: reproductive sytem
Replies: 1
Views: 2280

The effect of ethanol on peroxidase activity

Hi! I'm wondering if anyone knew why by increasing ethanol concentration in a 10mL solution mixed with yeast, a greater amount of oxygen was produced? So peroxidase activity increased when i increased ethanol concentration in my lab. I thought it was suppose to be the opposite since alcohol ...

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by wayne2824
Fri Feb 14, 2014 10:44 pm
 
Forum: General Discussion
Topic: The effect of ethanol on peroxidase activity
Replies: 1
Views: 817

Re:

... to stop it. But it's an exam question,so they probably want to know, whether you know that TCA runs aerobically only, althoughit doesn't require oxygen per se. Thus it's 200 ATPs from glycolysis (2 per 1 Glc) and could be additional 200 from TCA (1 per 1 acetyl-CoA). The TCA or Krebs cycle only ...

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by caters
Mon Feb 03, 2014 4:37 am
 
Forum: Cell Biology
Topic: ATP produced by human cells in an anaerobic chamber. LOST!
Replies: 2
Views: 3764
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