How can certain bacteria and viruses be deadly to one species but completely harmless to another? |
- How can certain bacteria and viruses be deadly to one species but completely harmless to another?
- What makes different viruses trigger such diverse responses in our body?
- Why don't mRNA vaccines require an adjuvant?
- Why does varicella cause blisters?
- How does pressure (e.g. in the earth's mantle) generate heat?
- How do we compare altitudes on different planets?
- Where do gases from the stars go when they die?
- How long does it take to domesticate a new species?
- When the Sun 'dies' how long would it take to reach Earth?
- What genus has lasted on Earth for the longest span of time?
| How can certain bacteria and viruses be deadly to one species but completely harmless to another? Posted: 18 Jun 2021 04:20 AM PDT |
| What makes different viruses trigger such diverse responses in our body? Posted: 18 Jun 2021 04:27 AM PDT Why is it that some viruses cause virtually no response from our body, while others like Ebola cause responses so severe that it often leads to death? In what way are virus different that it lead to drastically different responses? Don't they just all hijack our cells to multiply, why should the response be so different? [link] [comments]  |
| Why don't mRNA vaccines require an adjuvant? Posted: 18 Jun 2021 09:34 AM PDT Most other vaccine types, especially the inactivated virus/bacteria or subunit vaccines require the co-administration of an adjuvant to elicit a good immune response leading to immunity. Vector vaccines, to my knowledge, also contain an "adjuvant" in the form of the actual virus used to deliver the DNA to cells. mRNA vaccines do not seem to require an adjuvant, and in fact the most successful mRNA vaccines have modifications on the RNA portion to reduce immunogenicity. Why is this? Do the RNA and lipids used in the vaccine have properties that somehow allow the immune system to decisively react to them, or their translation products, as "foreign" antigens? [link] [comments]  |
| Why does varicella cause blisters? Posted: 17 Jun 2021 08:52 PM PDT |
| How does pressure (e.g. in the earth's mantle) generate heat? Posted: 17 Jun 2021 01:37 PM PDT Does this require movement of mass, so you get friction, or is there another mechanism? [link] [comments]  |
| How do we compare altitudes on different planets? Posted: 17 Jun 2021 01:20 AM PDT I have often heard Olympus Mons (on Mars) described as the tallest mountain in the Solar System (being 21.9km high). This got me thinking, since there is no sea level on most celestial bodies, what are these heights relative to? Especially on planets with our a well-defined solid surface. [link] [comments]  |
| Where do gases from the stars go when they die? Posted: 17 Jun 2021 06:58 AM PDT |
| How long does it take to domesticate a new species? Posted: 17 Jun 2021 06:36 AM PDT Now that people are keeping racoons, foxes, even deer as pets. How long will it take for those animals to be domesticated like dogs or cats? Is it even possible? Or is it just a special thing with dogs and cats? [link] [comments]  |
| When the Sun 'dies' how long would it take to reach Earth? Posted: 17 Jun 2021 01:47 AM PDT Let's assume for a moment that humans will be walking Earth some millions of years in the future by the time the Sun reaches it's end of days. From what I know the Sun would start expanding rapidly and then implode into a neutron star or a black hole but not before it engulfs Earth. What would the then humans see? Nearing the end of the Sun's lifecycle, would it even be powerful enough to sustain life on the planet? Once it starts expanding, how long would it take until it engulfs the planet? Would the humans have like ... final few hours to say goodbyes or something? Would the sky change while it's happening? [link] [comments]  |
| What genus has lasted on Earth for the longest span of time? Posted: 16 Jun 2021 09:33 PM PDT So this is about as general a question as could be, but what genus of life has lasted the longest on Earth? I'm guessing the top record holder would be something microscopic that is found in the fossil record going way back, but I'm also wondering what larger plants or animals have been around the longest. Off the top of my head there are species of Ginko trees found in Cretaceous fossils. Wonder what animal lasted the longest, though. [link] [comments]  |
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