What do heavy metals really do to a person, and what does our body do to get rid of them? |
- What do heavy metals really do to a person, and what does our body do to get rid of them?
- Are neurons immortal? Do neurons die and regenerate like the rest of your cells throughout your life? If so, how is the information preserved?
- How did we discover molecular processes like the Krebs cycle or electron transport chain?
- Why does anemia make you crave chewing ice?
- Does a binary star system create a dynamic Goldilocks zone?
- Why do left - handed fermions form a doublet/transform under SU(2) and right handed don't?
- Does grass have flowers?
- How is the maximum capacity of a bridge calculated?
- Is a Reynold's number higher than 4000(using SI units) always turbulent? Also where does the usefulness of this value break down?
- When a person is anesthetized, does s/he behaves as if were assleep (like snoring, dreaming) or is it something completely different?
- Do countries in the tropics have a, "flu season"?
- Can there be dwarf rogue planets?
- What do the pollen count numbers actually mean?
- How does the equipartition system apply to macroscopic degrees of freedom?
- Is it possible to have saltwater rain?
- If what I've read about photons is correct, they follow the conservation of energy. What happens to the energy from the photon after it is absorbed by the retina and we "see" it?
- What, physiologically, makes an animal warm blooded or cold blooded?
- Why do OTC drugs like ibuprofen sometimes turn up as false-positives for THC and/or PCP on drug screenings?
- How does possitive void coefficient work?
| What do heavy metals really do to a person, and what does our body do to get rid of them? Posted: 23 May 2019 11:02 PM PDT There's been plenty of misinformation spread thanks to the vaccine scare, so I'm curious to have some facts. Let's say some unfortunate person has eaten a tomato with an amount of lead in or on it. The symptoms of heavy metal poisoning are easy enough to find online, but what exactly is happening to cause the symptoms? It's usually a bad thing to have them around in the body, so what does the body do to remove them? Are they just filtered out by the kidneys like a lot of other stuff? Do they break down somehow on their own? [link] [comments]  |
| Posted: 23 May 2019 10:13 PM PDT A) Are neurons immortal? B) If not, how come my memory doesnt get wiped every few years or even decades? C) Also, if a person were to live for a very very long time with the help of machines that would keep his organs working, would we be able to observe all his neurons die and his memories fade? Or would the brain just continue to function indefinitely? (I'm short, can the brain die of old age like other organs) [link] [comments]  |
| How did we discover molecular processes like the Krebs cycle or electron transport chain? Posted: 24 May 2019 05:09 AM PDT "I need someone to explain this to me like I'm a 5 year old" - Michael Scott It's very easy to see how astronomers can look at large moving bodies and formulate a hypothesis and test the hypothesis with models and then identify if celestial motion can be accurately predicted. How do we do this in a cell? How do we replicate cellular biology? It's blowing my mind and I assume these processes work so fast and are so small that we can't visually see them. [link] [comments]  |
| Why does anemia make you crave chewing ice? Posted: 23 May 2019 09:30 PM PDT |
| Does a binary star system create a dynamic Goldilocks zone? Posted: 23 May 2019 11:09 PM PDT Would 2 or more stars in a system create a habitable zone which is always changing in position in respect to the stars' location? [link] [comments]  |
| Why do left - handed fermions form a doublet/transform under SU(2) and right handed don't? Posted: 24 May 2019 06:08 AM PDT I am studying the electroweak interaction and Higgs - mechanism and I am trying for days now to find an answer to my questions but I can't... I would be glad for help :) [link] [comments]  |
| Posted: 24 May 2019 05:37 AM PDT I was wondering, if grass has flowers or how are they producing seeds you can buy and make your lawn. I have never seen that type of grass having flowers although the seeds look similar to grain seeds. [link] [comments]  |
| How is the maximum capacity of a bridge calculated? Posted: 24 May 2019 03:48 AM PDT Maximum amount of cars that can be on a bridge, taking in count the length and the weight of the car and the outside factors [link] [comments]  |
| Posted: 23 May 2019 11:44 PM PDT It seems to me like Reynold's number is one of those "good enough" types of equations and I've been wondering if this relation is always true or if certain cases defy any assumptions made by the usual equation of (density X velocity X diameter)/(dynamic viscosity) [link] [comments]  |
| Posted: 24 May 2019 05:41 AM PDT Basically my brother is in surgery right now and I began to wonder about this. Thanks in advance [link] [comments]  |
| Do countries in the tropics have a, "flu season"? Posted: 23 May 2019 11:42 PM PDT I live in Australia and we are coming into winter so it's coming to, 'flu season', and time to get our flu shots. What happens in the tropics where it is just warm all the time? Do they still have a flu season or a certain time of year they are encouraged to get flu shots? [link] [comments]  |
| Can there be dwarf rogue planets? Posted: 23 May 2019 11:56 PM PDT |
| What do the pollen count numbers actually mean? Posted: 23 May 2019 08:47 AM PDT A friend of mine is looking for an explanation of the pollen count scale. She wants to know "how a measurement is converted to this scale, is it linear, etc." She was looking up information on it, but she kept getting simplified style info, and she wants more detailed scientific explanation of it. Thank you! [link] [comments]  |
| How does the equipartition system apply to macroscopic degrees of freedom? Posted: 24 May 2019 02:02 AM PDT My lecture notes on Experimental Methods includes a description of thermal/Johnson noise in electrical circuits. The argument used to quantify the amplitude of this noise is to consider a closed RC circuit (no voltage source). The energy stored in the system is (1/2)CV2. Equipartition then requires every quadratic energy term to store an energy (1/2)kT (at high temperatures), and from this we can obtain the RMS voltage. I fully understand why equipartition applies to a system composed of a large number of particles, where each composing particle introduces as many microscopic quadratic energy terms as it has degrees of freedom. What I don't get is why the voltage of the RC circuit should count as a degree of freedom in itself, given that it is macroscopic. I suppose this connects to a broader question about the range of applicability of the equipartition theorem. What counts as a "degree of freedom" of a system? I hope this question is clear - I'm not entirely sure it's clear in my head and so please do ask if I can clarify something. [link] [comments]  |
| Is it possible to have saltwater rain? Posted: 23 May 2019 10:22 AM PDT |
| Posted: 23 May 2019 11:26 AM PDT |
| What, physiologically, makes an animal warm blooded or cold blooded? Posted: 23 May 2019 11:25 AM PDT Does heat generation come from the inefficient use of high energy molecules? What parts of the body generate heat, does this happen everywhere, or does it occur in a particular organ such that blood can carry it to other places? I've heard that muscle usage might be attributed to this, however we still generate heat while we are resting, right? [link] [comments]  |
| Posted: 23 May 2019 12:06 PM PDT This has happened to me twice, and although it didn't effect the outcome of my employment in anyway (they don't test for THC), it has me wondering how many folks out there may have lost their jobs because of this. [link] [comments]  |
| How does possitive void coefficient work? Posted: 23 May 2019 01:46 PM PDT Hey, so i understant negative void coefficient; steam = 1/1860 the neutron absorbing qualities of water, more steam bubbles, or voids, = less neutons absorbed = reactivity decreases. Can someone please explain how positive void coefficient works. i understant that increased voids = increased reactivity, although in not sure why it works. I can grasp this in a RBMK reactor where the moderator (graphite) is different to the coolant (water). This is because the increased voids = less liquid water = less cooling, however the graphite moderator remains there so neutrons absorbed reducing reactivity, although in not sure what relevence the increase of steam from water has on neutrons (apart from the lack of cooling aspect, which effects temp of core however to my knowlage not neutrons). Appologies for the shoddy explination I hope you understand what im asking Thanks [link] [comments]  |
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