/u/jailbird2569's posts in /r/askscience

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Two questions. When an animal (eg. a bird) "sings" can it be quantified into musical notes and if so does it fit into a conventional musical key like human songs? Do animals recognize/ appreciate human music? - i.e. can they differentiate when notes are 'out of key'/ 'off key' etc.?

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When people typically die from poisons or toxins that work as inhibitors for vital enzymes (ex. cyanide), how does a relatively small concentration of the poison/toxin completely disrupt a much larger network of enzymes so quickly?

126 upvotes

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if someone was infected with a single HIV virus, would that be enough to cause an HIV infection?

11 upvotes

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What would happen on Earth if humans were to suddenly disappear/ die out?

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If there was a medium for sound to travel from the sun to Earth, could we hear the nuclear fission explosions from Earth?

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When an ant or spider crawls on you, don't they know that you're there? If so, why would they do that?

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At what efficiency does our bodies burn calories from food?

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2 Part Question: 1.If our eyes were able to detect more (ie. alot more/ or all?) than the visible spectrum of light (~260nm- ~700nm), would our brains be able to process it? 2. How is it possible to see infra-red through a digital camera?

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What would happen if the Sun was to suddenly disappear? (Following the last 8 minutes of light)

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Why do I feel a sudden short giant throbbing headache pain (for a few seconds) whenever I accidentally inhale water through my nostrils (for ex. in the case of swimming)

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Title	Upvotes	Mark as read	Favorited	Rating	Add to a list
Two questions. When an animal (eg. a bird) "sings" can it be quantified into musical notes and if so does it fit into a conventional musical key like human songs? Do animals recognize/ appreciate human music? - i.e. can they differentiate when notes are 'out of key'/ 'off key' etc.?	559
When people typically die from poisons or toxins that work as inhibitors for vital enzymes (ex. cyanide), how does a relatively small concentration of the poison/toxin completely disrupt a much larger network of enzymes so quickly?	126
if someone was infected with a single HIV virus, would that be enough to cause an HIV infection?	11
What would happen on Earth if humans were to suddenly disappear/ die out?	1
If there was a medium for sound to travel from the sun to Earth, could we hear the nuclear fission explosions from Earth?	1
When an ant or spider crawls on you, don't they know that you're there? If so, why would they do that?	1
At what efficiency does our bodies burn calories from food?	1
2 Part Question: 1.If our eyes were able to detect more (ie. alot more/ or all?) than the visible spectrum of light (~260nm- ~700nm), would our brains be able to process it? 2. How is it possible to see infra-red through a digital camera?	1
What would happen if the Sun was to suddenly disappear? (Following the last 8 minutes of light)	1
Why do I feel a sudden short giant throbbing headache pain (for a few seconds) whenever I accidentally inhale water through my nostrils (for ex. in the case of swimming)	0