00:03let's blow your mind with some so cool science time are all viruses the same size well that's
00:13a wicked cool question which means we're talking viruses and by the way i promise i won't force
00:18you against your will to wear some stupid mask take this mask and ram it up inside your corn
00:25hole because today i've got a wicked cool way of showing you the different sizes of viruses and i
00:31promise you it'll be a hundred percent accurate you know unlike a government you know which i
00:35wouldn't trust if they told me an asteroid was about to slam into earth
00:49so go ahead and get yourself a tape measure because i'm going to show you
00:53a scale model way of seeing the different sizes of viruses
00:59okay so if we say that the smallest virus was about two millimeters then the virus that gives
01:04you the flu would only be about one centimeter a bacteriophage would be slightly bigger than
01:10two centimeters the meme virus would be about four centimeters and of course the ebola virus would be
01:16one meter okay so those are pretty wicked cool sizes but how big do you think the largest virus
01:22known to humankind would be well check this out it would be a whopping 1.7 meters now that's so
01:31freaking wicked cool see i bet you thought that all viruses are like the same size and they're not
01:34because see virus is different sizes they have different things so what exactly is a virus anyway
01:41and how do we know how large or small a virus really is well don't look at me take a
01:48closer look
01:49add this a virus is an infectious small size simple composition capsule that can multiply only in
01:57living cells of animals plants or bacteria and the word actually means slimy liquid all viruses fall into
02:04two classifications based on whether their protein coat and enclosed nucleic acid assume a rod-like or
02:11polygonal shape viruses are made up of genetic material either dna or rna ribonucleic acid this
02:18is wrapped in a capsid usually with protein receptors on the outside of the capsid and contain no other
02:24organelles like a eukaryotic cell viruses are generally too small to be seen with a conventional
02:30light microscope and require an electron microscope for direct visualization electron beams are used to view
02:37the viral structure it used to be believed that viruses were the beginning of life but this is
02:41wrong some scientists believe that they actually devolved from cells as rogue nucleic acid capsules to
02:48convert into viruses so now you know more about the pithovirus you know being able to see viral sizes
02:55viruses right at home is why science is so infectious
Comments