Why don’t starch and cellulose taste sweet like sugars, although they’re polymers of sugars? | AskScience Blog

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Friday, May 3, 2019

Why don’t starch and cellulose taste sweet like sugars, although they’re polymers of sugars?

Why don’t starch and cellulose taste sweet like sugars, although they’re polymers of sugars?


Why don’t starch and cellulose taste sweet like sugars, although they’re polymers of sugars?

Posted: 02 May 2019 08:14 AM PDT

What caused the continents to drift apart from Pangea?

Posted: 02 May 2019 11:19 PM PDT

How do we know that Electromagnetism doesn't override the strong force, rather than the strong force becoming repulsive?

Posted: 03 May 2019 02:38 AM PDT

We know that the strong force has a very short range of about 5fm, and within 0.5fm it becomes repulsive to stop particles hitting each other.

However, since electromagnetism becomes stronger with decreased distance, how do we know that the electromagnetic repulsion of same charge particles doesn't override the strong force, and therefore eliminate the need for the S.F. to becomes repulsive?

submitted by /u/Carso107
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Why does fire point up?

Posted: 03 May 2019 06:06 AM PDT

Why do galaxies form superclusters throughout the universe instead of being evenly or randomly distributed in space?

Posted: 02 May 2019 08:13 AM PDT

Every model of the universe shows "webs" of galactic clusters with gaping voids between them (Boötes void being the most famous of them). But on a universal scale, galaxies are tiny, so I couldn't imagine that they're so dense that they'd have that amount of attraction to each other across gigaparsecs of distance.

Much in the same way that diffuse galaxies have no apparent shape (despite often having huge amounts of stars), I'd think that the same would occur with the universe as a whole.

Or maybe physics works differently at such massive scales?

submitted by /u/faux_noodles
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What kind of cameras are mounted on Space-X rockets? How're they designed?

Posted: 02 May 2019 01:13 PM PDT

I noticed Space-X's rocket mounted cameras are of a slightly lower quality than the cameras that don't go to SPACE.. This got me wondering-

  • How does one design a camera that can go to space on the outside of a rocket?

  • What're the design challenges and considerations?

  • On the Falcon rockets are they mounted in plexi-glass housings or some other material?

  • How're they not destroyed by vibrations from the motor or the drastic atmospheric temperature changes?

  • Does anyone know what brand and model of Camera Space-X uses? It'd be one hell of a marketing tactic.. "Buy our cameras, they're able to ride rockets to SPACE!!!"

submitted by /u/Jpf123
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What causes seeds to germinate only when inside the soil, but not when inside the fruit?

Posted: 02 May 2019 12:15 PM PDT

How are large flocks of birds and schools of fish able to stay so well coordinated?

Posted: 02 May 2019 01:23 PM PDT

Can a vaccinated person still get sick with measles?

Posted: 02 May 2019 07:01 AM PDT

I mean why is it such big problem to be near a sick person if you're vaccinated? What is the biology of this issue?

submitted by /u/Fretful_Hobbit
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What makes roasting vegetables go soft?

Posted: 02 May 2019 12:18 PM PDT

Just eating some roasted broccoli thinking, how did heat make it softer?

submitted by /u/JallTT
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What does it mean for a black hole to be rotating?

Posted: 02 May 2019 12:48 PM PDT

It seems unintuitive to me to describe a single point as rotating. In what direction does a singularity rotate?

submitted by /u/mrmcbastard
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What happens if a non depressed person takes depression medication?

Posted: 02 May 2019 09:45 AM PDT

Or what happens if a depressed person takes a higher dosage than needed?

submitted by /u/conservio
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How do underwater cables support massive bandwidth?

Posted: 02 May 2019 10:00 AM PDT

I know there are underwater cables running from the US to Europe and Asia connecting international networks. How do these cables support the massive amount of data that would need to be transferred to serve the many thousands (if not millions) of people requesting that data?

submitted by /u/ZachofArc
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Is Loschmidt's paradox considered resolved?

Posted: 02 May 2019 09:13 AM PDT

Loschmidt's paradox deals with the fact that our laws of physics are time symmetric, yet our macroscopic universe is irreversible. Do physicists currently consider Loschmidt's paradox as resolved? If yes, how do time symmetric laws give rise to irreversible macroscopic dynamics?

submitted by /u/whichton
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What differentiates a breed and a species within the same genus?

Posted: 02 May 2019 11:58 AM PDT

Is it needed to consider "aerodynamics" for spaceships traveling only in the space?

Posted: 02 May 2019 07:16 AM PDT

Even so the open space is considered "void", there must be some particles dispersed, and probably random accumulation of dust distributed in the space. But more importantly, with enough speed, and enough ship size, the amount of particles colliding with the ship in a period of time could be the same as a car traveling at high speed in the Earth in that same period of time. Or not? Is it too void the space to even consider this?

submitted by /u/jgomo3
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Why close the LAA?

Posted: 02 May 2019 04:18 PM PDT

Why would you close the LAA to prevent strokes as opposed to the other places in the heart? Laymans terms please?

submitted by /u/GrayMatters0901
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Code for simple General Circulation Models

Posted: 02 May 2019 10:14 AM PDT

I sometimes like to play around with simulations, and have gotten interested in general circulation models. I know the ones they use now are extraordinarily complex, but I also know they go way back to the mid 20th century and the simplest versions have only a few layers and deal only with things like surface heating and angular momentum. That's the sort of thing I'm interested in playing around with. Are there any modern examples with code available of these, made just as an example of how they work?

submitted by /u/atomfullerene
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Was complex life on Mars ever really possible?

Posted: 02 May 2019 09:23 AM PDT

I know we've found some evidence of microbial life and water and such but would mars have ever been capable of forming more complex life? I would think it sits outside of the Goldilocks zone and that even with an atmosphere would it help enough?

submitted by /u/Linxous1
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