Question

washing;respiratorio;properties;wet;soap;virus;dry;layers;alcohol;Surface
HOW DOES SOAP INACTIVATE CORONAVIRUSES?
Hi, I'm Julie from the Exploratorium. You've probably heard that washing your hands
with Soop.. and water is the most effective way of preventing the spread of
coronavirus. Now the question is, why is soap so helpful? And the answer is due to the
biology and the structure of the ... la... itself. Now a membrane surrounds many
viruses, including coronaviruses. And this membrane is exactly the same as the one that
surrounds our own cells. The membrane is mode of molecules that have a special
property. They have one side that I've represented in blue here, that likes water, it's a
water-loving end, and then their other half of them dislikes water, it's a woter hoting
end. It likes fats a little bit more. Now these molecules assemble so that they have
octually two layers of them. One side lines up so the water's focing on this end, and
the other sidelines up so the water's facing on that. And basically, a ribbon of these
surrounds the virus. Now the trick to inactivating this virus is to disrupt the membrane.
Soap molecules have very similar .............. They have one side that likes woter, and
another side that's attracted to fot. That is why they're really helpful when you're
washing your greasy dishes. If you can get a soap molecule into the virus membrane,
It'll disrupt the structure of the membrane, and that Inactivates the virus. The other
thing that soap Is handy for, is it can help us investigate the behavior of membranes. I
have a tray of soapy water here, and a string that I've threaded through two straws. If
you wanna try this at home, we have instructions and a recipe for it on our website. You
can see that when I pull up the straws, thot a film forms. This is a soap film. And this
membrane has the same behavior as the membrane around the virus. v I touch it
withmy ...............hund, you'll see that it pops. And In fact, when the coronavirus is on a
all it needs to do is eventually dry out, and it will be inactivated. However,
if I now wer my finger, you'll see that my
finger does not disrupt the
membrane. You've probably heard that the virus travels in ............. droplets. It needs
these droplets of water to keep its membranes intact. Another thing you've probably
heard is that if you don't have soop and water available, hand sanitizers that have 60%
or more alcohol, are also effective in inactivating the virus. I have some 70% rubbing
here, and this time I'm gonna pull up my membrane, and I have my finger
covered in the alcohol. And the moment I touch the membrane, it pops. And so alcohol
is another way to inactivate the virus. Now alcohol tends to evaporate, and maybe that
happens before you've gotten it into all the crevices of your hands, so soap and water is
really the best choice. So keep ...... ....... your hands, and celebrate our hero: the soap
molecule.​

Answer 1

Respuesta:

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Explicación:

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