The process in which energy is liberated from organic molecules producing ATP.

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How do bacteria use oxygen for respiration and growth?

I recently did an experiment with the rest of my class in which we had to see which of two solutions best aided a bacterium's growth. The bacterium had already undergone slight growth in the ...
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Potential homogeneity across cell membrane

During respiration, individual bacteria (and mitocondria) produce a relatively large potential difference (∼100 mV) between the inside and outside, using energy to pump $H^+$ out of the cell to the ...
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Critical pO2 threshold for cell division?

I'm a physicist asking questions on an aspect of cellular metabolism, so excuse my biological ignorance! Hypoxia is a frequent complication of certain tumour types, and has quite an implication for ...
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Mechanism behind energy generation

I recently read about methanogens and methanotrophs. One converts CO2 to methane and vice versa respectively. I can't get exact mechanism for the methanotrophs and I know they can't be reversed ...
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How are muscle fibre size and oxygen consumption related?

Does anyone know of a paper which correlates the muscle fibre size to oxygen consumption in mammals? I am trying to find a correlation between muscle fibre type, size and (absolute and specific) ...
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Why oxidation for energy occurs in the tissue?

Air consists of 20% oxygen while a percentage of dissolved oxygen in water is ~0.005-0.0015% in normal Earth condition. Why do animals use dissolved oxygen for energy production ('aerobic' digestion)? ...