Do we know why the inner planets of the solar system are all rocky compared to the outer planets which are all gas giants? |
- Do we know why the inner planets of the solar system are all rocky compared to the outer planets which are all gas giants?
- Humans can easily identify other humans using their faces alone, but we generally can't easily distinguish one member of a species from another by face alone (e.g. a lion from the others). Do animals have the same ability to recognize each other (same species) from face alone?
- How does our body regulate white blood cell count?
- If I were on a space station 2 light years away?
- When getting a brain scan, doctors will typically compare your results with a “normal” functioning brain. How did we decide how a “normal” brain is supposed to work and who did we use to measure this?
- How can Ethylene carbonate be organic solvent for liquid eletrolytes?
- Why is lactose-negative bacteria are more likely to be the pathogen in fecal samples than lactose positive-bacteria?
- Before ~1850, did people know the effects of drinking while pregnant? Or were many children just born with fetal alcohol syndrome?
- What is the 'darkest' place on the surface of the earth - in terms of light pollution?
- Does the size of an individual cell within a multicellular organism scale up or down with the size of the whole organism?
- Why does a pot of water that's been heating on a stove sometimes suddenly boil if it's moved even just a little bit on the burner?
- How does streaming work?
- Studying theatre, I've heard teachers talk about the long "E" phoneme sounding excited but tinny and irritating, or the long "O" phoneme sounding melancholy and solemn... is there any science behind the emotions that specific phonemes elicit? If so, what sounds match to what emotions?
- What processes do vaccine manufactures use to make sure inactivated viruses are truly, 100% inactivated?
- How does the lac repressor prevent transcription of the operon?
- How can one side of the brain do "all the work" after a Hemispherectomy?
- How are our diaphragms able to function as both a voluntary and involuntary muscle?
- How should "t-channel" fermions in feynman diagrams be interpreted?
- How does a computer know which 0s and 1s belong to a color vs a number representation?
- If Genomic imprinting is the only thing that stops an egg from fusing with another egg, would this mean there is nothing to stop an egg from fusing with another egg in species that lack Genomic imprinting?
- How often do people actually use the stem cells that they have banked?
| Posted: 29 Nov 2019 02:29 AM PST |
| Posted: 29 Nov 2019 06:49 AM PST |
| How does our body regulate white blood cell count? Posted: 29 Nov 2019 03:28 AM PST It seems really good at ensuring it isn't over/under producing white blood cells so I was wondering how it achieves this. I tried googling this expecting a pretty straightforward answer but I can't find anything. [link] [comments]  |
| If I were on a space station 2 light years away? Posted: 28 Nov 2019 11:21 PM PST Ok, so basically say I, right now, was instantaneously teleported via some kind of magic to a space station 2 light years away. I have a telescope on this space station that is so powerful I can see people walking around on city streets in minute detail, would the planet I see be Earth in the year 2017? And if so could I theoretically see myself walking around on the surface of planet back in 2017? [link] [comments]  |
| Posted: 28 Nov 2019 11:24 PM PST |
| How can Ethylene carbonate be organic solvent for liquid eletrolytes? Posted: 29 Nov 2019 05:35 AM PST In relation with Li-ion batteries EC and DC form solids at room temperature. additives or lithium salts increase their melting points? [link] [comments]  |
| Posted: 29 Nov 2019 01:23 AM PST |
| Posted: 28 Nov 2019 12:02 PM PST |
| What is the 'darkest' place on the surface of the earth - in terms of light pollution? Posted: 28 Nov 2019 01:39 PM PST (with the 'surface' part I just mean that it's a spot where the sky/universe can be seen, not like any cave or something like this) [link] [comments]  |
| Posted: 28 Nov 2019 10:11 PM PST Like compare a human and an ant. Are our epithelial (skin) cells roughly the same size, and humans just have way more than ants, or are there about the same number of cells and human skin cells are just considerably bigger? What about neuronal (brain) cells? Or blood cells? How does the size of individual cells typically compare between the biggest organisms on the planet (like whales) and the smallest (like ants)? Thanks! [link] [comments]  |
| Posted: 28 Nov 2019 04:44 PM PST |
| Posted: 28 Nov 2019 01:36 PM PST Can somebody point me to a decent online course or YouTube videos or a textbook on this? I got off the technical track about the time streaming vids became easy, and now that I've cut the cord and am dealing with Roku and YouTubeTv with the discussions of compression, interlacing, upconverting, etc. I need to go back to school. And if this isn't the right sub for this type of question, can you point to a better one? r/streaming is just gamers. [link] [comments]  |
| Posted: 28 Nov 2019 06:06 PM PST |
| Posted: 28 Nov 2019 11:24 AM PST and what's the scientific/realistic probability that in the modern day, a tiny portion of a batch of vaccine may actually contain un-inactivated virus? [link] [comments]  |
| How does the lac repressor prevent transcription of the operon? Posted: 28 Nov 2019 09:34 AM PST Does the repressor completely block binding of RNA polymerase to the promoter or does it only prevent the initiation of transcription? I'm asking this because we talked about 2 experiments in class that seemed to contradict each other One experiment used a run off transcription assay and found that a run-off product was generated, suggesting that RNAP was capable of binding to the promoter when the repressor was bound to the operator. Another experiment used ChIP and concluded that RNAP could only bind to the promoter when the repressor was not bound to the operator. I thought it might have to do with the fact that the operon has 3 operators (O1, O2, and O3) but im not sure. Sorry if the experiments are vague, i can describe them in more detail if needed. [link] [comments]  |
| How can one side of the brain do "all the work" after a Hemispherectomy? Posted: 28 Nov 2019 01:19 PM PST I've been reading about hemispherectomies and I find the operation both fascinating and baffling. I understand that the brain can only adapt when it's done to children because they have a higher degree of neuroplasticity and that at an early age the brain can "rewire" itself and basically be a completely functional brain; what I don't understand is, how can the brain adapt to losing half of its neurons? I know that the number of neurons isn't the only relevant number and I assume that the number of synapses grows significantly in the remaining hemisphere, but it's baffling that the brain can adapt to such damage. Is the number of synapses that much more important? The idea that the brain can function after losing 50% of it's matter also brings up a lot of questions I'd love to know the answer to. Is the brain simply not as efficient as it could be in normal people and that's why one half (that is I assume more efficient) can compensate so well? If so, is this the reason why there is a such an immense difference between people? Is the brain of a genius simply more like the remaining half of someone who went through a hemispherectomy? Are most brains simply stupid compared to what they could be if they reached their full potential? I know that this is a loaded question and I assume that there isn't a definitive answer to most of my questions but I'd still love to hear more about the topic. Thanks in advance! [link] [comments]  |
| How are our diaphragms able to function as both a voluntary and involuntary muscle? Posted: 28 Nov 2019 05:56 AM PST From what I remember from biology 101, skeletal muscles are controllable but interior smooth muscles around our organs aren't. What type of muscle cells make up our diaphragms? How are the nerves that connect our brains to our diaphragms different than other organs and body parts? [link] [comments]  |
| How should "t-channel" fermions in feynman diagrams be interpreted? Posted: 28 Nov 2019 12:49 PM PST So, in feynman diagrams, usually a fermion where the arrow points goes from left to right is a fermion, while if it goes from right to left, it is an antifermion, which is then interpreted as going backwards in time, as the x-axis is the axis of time. But in many diagrams, you have a fermion line that goes vertically (examples: one diagram of compton scattering, neutral pion decay). As I interpret it, this actually stands for a superposition of two diagrams - one where this line represents a fermion and one where it represents an antifermion. You would then have to sum over those two matrix elements. Is that a valid interpretation? [link] [comments]  |
| How does a computer know which 0s and 1s belong to a color vs a number representation? Posted: 28 Nov 2019 06:11 AM PST For example: I know that the binary system translates 0s and 1s to let's say the number 76. And this 76 is translated on to a map named unicode to translate it into a character. Then there is RGB which is also regulated by 0s and 1s to represent any color you like on your computer screen. But how does a computer distinguish these two? [link] [comments]  |
| Posted: 28 Nov 2019 05:41 AM PST My questions are; 1) If Genomic imprinting is the only thing that stops an egg from fusing with another egg, would this mean there is nothing to stop an egg from fusing with another egg and forming a zygote in species that lack Genomic imprinting? 2) But if in species that lack Genomic imprinting, an egg can never fuse with another egg, that would mean Genomic imprinting is not the only reason an egg can not fuse with another egg, right? 3) Do species that lack Genomic imprinting have analogous processes similar to Genomic imprinting that have helped and help decipher the mechanisms of specific gene expression which stop an egg from fusing with another egg and forming a zygote? If yes, what are the names of these similar processes? 4) Hypothetically speaking, would an egg "fusing" with another egg mean this egg is "fertilizing" another egg? And is this "sexual reproduction"? [link] [comments]  |
| How often do people actually use the stem cells that they have banked? Posted: 27 Nov 2019 05:00 PM PST I've heard of saving cord blood and the like and was curious how often people actually use it. I understand that it is only used when needed but is there a large percentage of the people who use their saved cells? [link] [comments]  |
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