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How long can a naked human survive on Mars?
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17 votes

Long story short, the astronaut probably wouldn't make it, and would first loose consciousness then suffocate. There is a lot of myth and hollywood dramatization regarding this kind of thing. Here ...

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Why do we have no enzyme to digest cellulose?
4 votes

The question forgets that organisms consume materials for two reasons: To capture chemical energy (which it focuses on) and to gain molecules that the organism cannot otherwise produce. Cellulose ...

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Why are genes expressed as proteins rather than other types of bio-molecules?
1 votes

The fact that genes are expressed as proteins and no other type of molecules is because it is one of the oldest remnants from evolutionary history and it was so successful that it has carried on ...

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