NewScientist The Last Word - Tag 'biochemistry' details

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why is uracil is replaced by thymine in RNA? answers required in deep biochem content.
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Categories: Human Body.

Alien Biology If life developed on a planet which wasnt very rich in iron what could could be used as a suitable subsitute for it? And would this difference in metal restrict these lifeforms to any constraints??
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Categories: Our universe.

If chlorophyll makes plants green and hemoglobin makes blood red, what makes fat yellow?
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Categories: Human Body.

If energy is conserved, why don't people just eat less (and save money) to lose weight?
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Categories: Human Body.

Some claim that plutonium is the most poisonous substance known. Is this true?
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Categories: Human Body.

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