Why do genes only make up ~2% of our DNA? What is the other 98% used for? |
- Why do genes only make up ~2% of our DNA? What is the other 98% used for?
- Why can you see where a boats wake was long after the boat has left and the water has stilled? Seems like the wake can be seen for hours on evenly calm water.
- Ask Anything Wednesday - Physics, Astronomy, Earth and Planetary Science
- Does Nuclear Fission require a Fast Neutron to begin?
- How does the chemical stability of a drug affect the drug absorption process?
- Is it possible to prevent or delay the "half Life" of radioactive materials?
- Any three digit multiple of 37 is still divisible by 37 when the digits are rotated. Is this just a coincidence or is there a mathematical explanation for this?
- Were there prehistoric counterparts to modern hummingbirds amongst the Pterosaurs (i.e. reptilian hummingbirds)?
- Why is igG more dominant in the secondary immune response?
- Do quarks actually have electric charge, or is it just an emergent property of having them bound into hadrons and the "fractional charge" we assign them is merely a helpful convention?
- Is speculation (as in speculating on material and stock prices) actually 'good' in any way for an economic system?
- How is Cre expression restricted to starburst amacrine cells in ChAT-Cre transgenic mice?
- How is the immune system involved with acne?
- In which regions of the world do birds pollinate instead of / more than bees, and why?
- is there a term for the temperature at which the material turns to plasma like melting point and boiling point?
- Why we are more flexible when we’re younger? What changes as we age so it’s harder for us to stretch?
- How do we know that ammonites were cephalopods?
- Is the corneal stroma 3 layered or is there something elese at play here?
- How do bond length, bond strength, atomic radii, and atomic orbital overlap reconcile with each other? (See text below)
- Does oxygen difluoride react with hydrocarbons?
- Is there a break between convergent and divergent “harmonic-like” series?
- When cellaring pipe tobacco, the conventional wisdom says that if tobacco dries out, it loses properties (oils in particular) that you can't completely get back by rehydrating. Wouldn't only moisture (water) evaporate and not oils?
- What exactly is happening to the brain during altered states of consciousness such as trance?
- Why do some plants that prefer poor soil die in rich soil?
| Why do genes only make up ~2% of our DNA? What is the other 98% used for? Posted: 24 May 2022 04:48 PM PDT |
| Posted: 25 May 2022 05:19 AM PDT |
| Ask Anything Wednesday - Physics, Astronomy, Earth and Planetary Science Posted: 25 May 2022 07:00 AM PDT Welcome to our weekly feature, Ask Anything Wednesday - this week we are focusing on Physics, Astronomy, Earth and Planetary Science Do you have a question within these topics you weren't sure was worth submitting? Is something a bit too speculative for a typical /r/AskScience post? No question is too big or small for AAW. In this thread you can ask any science-related question! Things like: "What would happen if...", "How will the future...", "If all the rules for 'X' were different...", "Why does my...". Asking Questions: Please post your question as a top-level response to this, and our team of panellists will be here to answer and discuss your questions. The other topic areas will appear in future Ask Anything Wednesdays, so if you have other questions not covered by this weeks theme please either hold on to it until those topics come around, or go and post over in our sister subreddit /r/AskScienceDiscussion , where every day is Ask Anything Wednesday! Off-theme questions in this post will be removed to try and keep the thread a manageable size for both our readers and panellists. Answering Questions: Please only answer a posted question if you are an expert in the field. The full guidelines for posting responses in AskScience can be found here. In short, this is a moderated subreddit, and responses which do not meet our quality guidelines will be removed. Remember, peer reviewed sources are always appreciated, and anecdotes are absolutely not appropriate. In general if your answer begins with 'I think', or 'I've heard', then it's not suitable for /r/AskScience. If you would like to become a member of the AskScience panel, please refer to the information provided here. Past AskAnythingWednesday posts can be found here. Ask away! [link] [comments] |
| Does Nuclear Fission require a Fast Neutron to begin? Posted: 24 May 2022 08:28 PM PDT Hi Sorry if that doesn't make sense. Basically, from everything I've seen, cross-section (likelihood) is higher with thermal neutrons than fast neutrons. However, the US NCR says that "a fissionable nuclide requires fast neutrons to induce fission." So I was wondering, is this a mistake? Does it only matter when in the process of inducing fission or is it something else? I'm assumingg I've made a mistake but I'm not sure where Cheers. Edit: Thanks for the replies, they helped a lot. [link] [comments] |
| How does the chemical stability of a drug affect the drug absorption process? Posted: 25 May 2022 04:52 AM PDT |
| Is it possible to prevent or delay the "half Life" of radioactive materials? Posted: 24 May 2022 06:46 PM PDT Short question arising from this thread https://www.reddit.com/r/dataisbeautiful/comments/uwwibg/oc_the_most_expensive_materials_in_the_world/ Is it somehow possible to delay or prevent radioactive materials from falling apart? If not, why is that so? [link] [comments] |
| Posted: 23 May 2022 08:15 AM PDT This is a "fun fact" I learned as a kid and have always been curious about. An example would be 37 X 13 = 481, if you rotate the digits to 148, then 148/37 = 4. You can rotate it again to 814, which divided by 37 = 22. Is this just a coincidence that this occurs, or is there a mathematical explanation? I've noticed that this doesn't work with other numbers, such as 39. [link] [comments] |
| Posted: 24 May 2022 03:18 PM PDT |
| Why is igG more dominant in the secondary immune response? Posted: 25 May 2022 07:02 AM PDT What the title says really. I understand why IgM is first released in the primary immune response as it has a pentameric structure and can activate more complement pathways as well as neutralisation of the pathogen. Why is igG then secreted more in the secondary response? Isn't the monomeric structure a disadvantage? I can't seem to wrap my head around it. I'd appreciate any help thanks! [link] [comments] |
| Posted: 24 May 2022 06:11 PM PDT I have a mere armchair understanding of particle physics. Part of what I know is that there are no free quarks in nature. They always have to be bound into hadrons or some kind of theoretical high-energy quark soup. Trying to force quarks that are already bound apart simply results in pair-production of more quarks from the energy you put in trying to separate them. For me, it raises the question, do we actually know whether individual quarks have so-conventioned "fractional" electric charge? Is it really a property that a hypothetical free quark (whatever that would mean) would possess, or could it perhaps only be an emergent property of the group? Is it even meaningful to distinguish between these scenarios? To clarify, my goal with this is not to speculate on what it could be, or to dwell on the philosophical. My questions are:
[link] [comments] |
| Posted: 24 May 2022 02:39 PM PDT I think most people see it as something negative and asociate it mostly with gambling. I would assume that the most healthy way (in a market-based economy) would be if prices for ressources are only determined by their rarerity, the costs caused by aquiring + transporting them and their potential value through further processing. Is there any upside in how speculations influence the prices further? [link] [comments] |
| How is Cre expression restricted to starburst amacrine cells in ChAT-Cre transgenic mice? Posted: 25 May 2022 02:12 AM PDT In a paper I'm reading, the authors restrict diphteria toxin receptor expression to starburst amacrine cells in transgenic ChAT-Cre mice. As far as I'm aware, ChAT is the choline acetyltransferase gene and is expressed in a multitude of tissues besides starburst amacrine cells. So how do the authors achieve targeted ablation of just these cells using this transgenic model? [link] [comments] |
| How is the immune system involved with acne? Posted: 24 May 2022 11:30 AM PDT So everyone I get sick, my acne goes away. Is this because my immune system is focused on better things? I'm confused how this works… [link] [comments] |
| In which regions of the world do birds pollinate instead of / more than bees, and why? Posted: 24 May 2022 10:04 AM PDT |
| Posted: 24 May 2022 08:03 AM PDT |
| Posted: 23 May 2022 01:25 PM PDT |
| How do we know that ammonites were cephalopods? Posted: 24 May 2022 01:17 PM PDT How do we know that ammonites were cephalopods and not just snails? [link] [comments] |
| Is the corneal stroma 3 layered or is there something elese at play here? Posted: 24 May 2022 10:47 AM PDT So I know there's not much to go on, and that is partly my fault for not thinking about this sub in advance, but I have a question about the corneal stroma. Today, I was at school and the teacher showed us a cornea through the microscope. It didn't say what stain it was and the teacher didn't know, but it was not HE and I'm fairly certain it was not orcein stain or silver impregnation, but I might be wrong on the latter as it was a darker stain. The main point I want to arrive at is that the stroma, which in HE looks fairly homogenous in color, was very clearly divided into 3 fairly equal layers, with the middle one lighter, as if no pigment got attached to it, and the outer ones darker, with one of them darker than the other (I wanna say the darker one was the one near the corneal endothelium). Now, I initially thought this has to be because of some biochemical component that binds the stain, which for some reason wasn't in the middle of the stroma, but I made a quick google search and see that the stroma has fibers going into different directions. Could this be the answer to why there were 3 layers? Is there another answer? Ps: I will try to ask the teacher for it again, next time, and if I get it I'll take a photo. I didn't because I thought of this sub on my way home. Either way, any ideas? [link] [comments] |
| Posted: 24 May 2022 12:09 PM PDT Question on bond length, strength, atomic radii, and orbital overlap We're told the following in undergrad: Poor orbital overlap (say, in H2S with a small hydrogen and large sulfur) means a weak bond Greater bond length means less bond strength (weaker bond) Yet larger atomic radii means greater bond length (for instance, the bond between S and Cl is longer than S and H, but yet S and Cl have better orbital overlap, meaning their bond is stronger despite being longer). So does this mean that "greater bond length = weaker bond" is not always true? I'm studying for the MCAT and am trying to reconcile this. Thanks. [link] [comments] |
| Does oxygen difluoride react with hydrocarbons? Posted: 24 May 2022 11:06 AM PDT Does Oxygen Difluoride ( F-O-F ) react with hydrocarbons(methane, ethane, butane, etc.)? [link] [comments] |
| Is there a break between convergent and divergent “harmonic-like” series? Posted: 23 May 2022 05:27 PM PDT The harmonic series is 1 + 1/2 + 1/3 + 1/4 + 1/5 + 1/n, and it is well-known to diverge to infinity. Now, if you square each of the terms, you get 1 + 1/4 + 1/9 + 1/16 + 1/25 + 1/n2, which is well-known to converge to π2/6. What I'm wondering is if there is a real number y, between 1 and 2, where the sum of 1/ny will diverge to infinity if y < x and converge if y > x. That is, is there a point that separates divergence and convergence of these series? It seems to me like there should be, but I have no idea how to begin to calculate it, and I would also not be too terribly surprised if it didn't exist. I wouldn't be surprised either if this has been asked before, but I've had no success in finding anything. [link] [comments] |
| Posted: 23 May 2022 08:03 PM PDT |
| What exactly is happening to the brain during altered states of consciousness such as trance? Posted: 23 May 2022 08:46 PM PDT I've been reading Lewis-Williams' works on entropic phenomena and altered states of consciousness that are achieved in shamanism, and while he does a good job of showing their universality and their effects on human perception of reality, he doesn't give a detail record of how exactly the specific sensations frequently associated with these states come about. Some of the common sensations he mentions are floating, weightlessness, suffocation, and a range of hallucinations. My question is, what exactly is happening to the brain that is causing this sensations — not how they are interpreted by the subject, but what is objectively happening that the subject interprets [link] [comments] |
| Why do some plants that prefer poor soil die in rich soil? Posted: 23 May 2022 07:02 PM PDT For example, lavender likes poor soil but doesn't do well in good soil. Shouldn't rich soil have what the plants need from poor soil? [link] [comments] |
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