How do cats know automatically how to use a litter box?

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• How do cats know automatically how to use a litter box?
• Is there really no better way to diagnose mental illness than by the person's description of what they're experiencing?
• We know that adrenaline allows people to do tremendous physical feats, e.g. to bring a child to safety from underneath a car. When the adrenaline wears off, what's the physical recovery like after the feat? Does the adult tear muscles, dislocate bones and just not notice?
• How important is the way that we breathe?
• When SETI detects a radio signal and states that it came from the region of a certain star many light-years away, how do they determine that considering that the signal has taken so long to reach Earth?
• How did the great plains remain essentially treeless for thousands of years being surrounded by Forests and high winds?
• Do SSRIs actually work and why is there so much scaremongering about them?
• Do our buttholes grow more tolerant to spicy foods through time and exposure like our mouths do?
• How did we figure out that light is essentially electromagnetic waves? What is the history of the relationship between the two?
• Projecting a star at the elongation between a point on the earth and the center?
• Do the expenses fuel cylinders from rockets crumple upon falling back down to earth?
• Can an Auto-Immune Disease patient be cured with a transplant?
• What is Topological Superconductivity and what do Majorana Fermions have to do with it?
• How do you model the height of an object that is thrown straight upwards as a function of time using the force due to gravity and the force of drag? I have tried to work it out before but it confuses me because Δv is proportional to a and Δa is proportional to v. I think I need to use calculus. help
• whats glutamate neurotoxicity mechanism?
• If we turned off every electrical light in the whole world, would light pollution go away instantly, or take time?
• How do scientists conclude that some bacteria species are extinct?
• How much do oxygen levels vary on Earth's surface?
• Are bonobo-like behaviors (like casual sex, female leadership, or agreeableness) correlated with one another in human beings?
• What are some examples of how we must compensate for the curvature of the earth in everyday human activity? I.e. calculations or measurements for construction, launching satellites, or any other common process?
• How do scientists measure the temperature of particles collided with the LHC?
• Could scientists measure if the physical constants were constant throughout time?
• I understand that any collision has a coefficient of restitution that determines how much kinetic energy is transferred between the two objects. But collisions also produce sound and heat. What decides how much of the total energy is converted to these other forms respectively?
• Do the black hole Sagittarius A* at the center of our Milky Way have any effect on the galaxy's movement/rotation?

How do cats know automatically how to use a litter box? Posted: 15 Aug 2019 01:24 PM PDT Hello Reddit! I've had this question bouncing in my brain for literal years but recently I got a cat and now I can't forget it. How do cats inherently know how to use a litter box? I saw videos on kittens and how they figure out how to use them in like 8 weeks. So they genuinely know how to use it almost from the beginning. I can't think of a litter box like thing in the "wild" so I'm really curious. Also how do they recognize that as their new bathroom? Like they had to have some alternative to what they normally would use, so how do they know that is where they're supposed to go? Thanks! submitted by /u/amartin131 [link] [comments]

Is there really no better way to diagnose mental illness than by the person's description of what they're experiencing? Posted: 16 Aug 2019 06:34 AM PDT I'm notorious for choosing the wrong words to describe some situation or feeling. Actually I'm pretty bad at describing things in general and I can't be the only person. So why is it entirely up to me to know the meds 'are working' and it not being investigated or substantiated by a brain scan or a test.. just something more scientific?? Because I have depression and anxiety.. I don't know what a person w/o depression feels like or what's the 'normal' amount of 'sad'! And pretty much everything is going to have some effect. submitted by /u/Falling2311 [link] [comments]

We know that adrenaline allows people to do tremendous physical feats, e.g. to bring a child to safety from underneath a car. When the adrenaline wears off, what's the physical recovery like after the feat? Does the adult tear muscles, dislocate bones and just not notice? Posted: 16 Aug 2019 05:46 AM PDT submitted by /u/stink3rbelle [link] [comments]

How important is the way that we breathe? Posted: 16 Aug 2019 06:28 AM PDT submitted by /u/cbrian13 [link] [comments]

When SETI detects a radio signal and states that it came from the region of a certain star many light-years away, how do they determine that considering that the signal has taken so long to reach Earth? Posted: 16 Aug 2019 05:37 AM PDT submitted by /u/Arachnatron [link] [comments]

How did the great plains remain essentially treeless for thousands of years being surrounded by Forests and high winds? Posted: 16 Aug 2019 04:56 AM PDT submitted by /u/Horrifyingphallus [link] [comments]

Do SSRIs actually work and why is there so much scaremongering about them? Posted: 16 Aug 2019 05:34 AM PDT Why is there such a popular backlash against SSRI medications nowadays? Is there substance behind the idea that they do more harm than good and that they are essentially just money-making machines for "Big Pharma"? Everywhere you look online, particularly in various self-improvement communities, you'll find suggestions that antidepressants are basically useless and that exercise and diet will fix depression. You'll find people reporting on permanent long-term damage to their sex drive and their ability to become aroused. Personally (and anecdotally) I eat well and exercise regularly but my mind is still wrapped up in negative thinking and poor self-esteem. I can't figure out the actual truth on these meds and whether they are worth trying. The level of scaremongering makes one reconsider it anyway. submitted by /u/jonnieonionrings [link] [comments]

Do our buttholes grow more tolerant to spicy foods through time and exposure like our mouths do? Posted: 15 Aug 2019 01:45 PM PDT submitted by /u/mowww [link] [comments]

How did we figure out that light is essentially electromagnetic waves? What is the history of the relationship between the two? Posted: 16 Aug 2019 01:35 AM PDT submitted by /u/GoSouthCourt [link] [comments]

Projecting a star at the elongation between a point on the earth and the center? Posted: 16 Aug 2019 01:52 AM PDT I am trying to find the alt/az of a ' infinitely' far fake star that would exist right above a certain point on the earth. So let's say we want a point above Stockholm at 58, 18 deg and then observe it from Amsterdam at 48, 7 deg. What would be the alt/az of the star? I know how to calculate the values for a star with a known ra/dec but I'm not sure how to translate lon/lat to sky coordinates. submitted by /u/Synethos [link] [comments]

Do the expenses fuel cylinders from rockets crumple upon falling back down to earth? Posted: 15 Aug 2019 11:25 PM PDT You know those fuel cylinders that detach from the rocket as it goes up into space? Why do they fall back to earth as regular cylinders in every video I see? Aren't they thin metal sheet cylinders? I would expect them to deform like a water bottle submerged in cold/hot water with respect to the temperature of the bottle (both cases lead to deformation right?). Can someone explain to me what's going on? submitted by /u/Ilovethatyouru [link] [comments]

Can an Auto-Immune Disease patient be cured with a transplant? Posted: 15 Aug 2019 11:15 PM PDT I have an Auto-Immune Disease and cannot find many articles detailing if AIDs can be cured by transplanting the part of the body that is affected. submitted by /u/brettlw_ [link] [comments]

What is Topological Superconductivity and what do Majorana Fermions have to do with it? Posted: 15 Aug 2019 11:15 PM PDT submitted by /u/Parzival314 [link] [comments]

How do you model the height of an object that is thrown straight upwards as a function of time using the force due to gravity and the force of drag? I have tried to work it out before but it confuses me because Δv is proportional to a and Δa is proportional to v. I think I need to use calculus. help Posted: 15 Aug 2019 06:54 PM PDT submitted by /u/Magriso [link] [comments]

whats glutamate neurotoxicity mechanism? Posted: 15 Aug 2019 10:06 PM PDT https://youtu.be/r-6VBx2aeIY i found this video... is this correct? also, how is NO involved in this? submitted by /u/hiriluk-4 [link] [comments]

If we turned off every electrical light in the whole world, would light pollution go away instantly, or take time? Posted: 15 Aug 2019 10:45 AM PDT submitted by /u/TrollaHome [link] [comments]

How do scientists conclude that some bacteria species are extinct? Posted: 16 Aug 2019 12:24 AM PDT It seems like something that cannot be stated with certainty, considering even a single bacterium could divide rapidly and cause the species to come back from the verge of extinction. submitted by /u/dohjavu [link] [comments]

How much do oxygen levels vary on Earth's surface? Posted: 16 Aug 2019 12:11 AM PDT Most people know that Earth's atmosphere "contains 21% oxygen". But what does that actually mean in various places at ground level? Plants produce oxygen, does that mean forests have substantially higher concentrations of oxygen than 21%? Animals consume oxygen, does that mean oxygen levels are less than 21% around large assemblies of animals, such as locust swarms containing tens of billions of individuals? What about places where there are neither plants nor animals, such as Antarctica? Or just above the surface of the oceans? Are there maps that show oxygen distribution at ground level? submitted by /u/iwanttobepart [link] [comments]

Are bonobo-like behaviors (like casual sex, female leadership, or agreeableness) correlated with one another in human beings? Posted: 15 Aug 2019 08:00 PM PDT To give you some background, this possibly ridiculous question was inspired by certain social and sexual behaviors of bonobos. Along with chimpanzees, bonobos are one of the species that is mostly closely related to humanity. Bonobos set themselves apart from other primates with their enthusiastic usage of sex as a way of bonding and resolving conflict. They are also known for being peaceful in comparison to other primates (like chimpanzees). Moreover, located at the top of the pecking order in bonobo societies are the oldest, most knowledgeable, and most experienced females in the group; in other words (and at the risk of anthropomorphizing them), bonobos practice what people might call a form of matriarchy. So, I got to wondering whether there might be some special relationship between those or other bonobo behavior patterns in human beings. I know there are many ways this question could be taken, so partial answers are more than welcome. submitted by /u/FalconAssassin1337 [link] [comments]

What are some examples of how we must compensate for the curvature of the earth in everyday human activity? I.e. calculations or measurements for construction, launching satellites, or any other common process? Posted: 15 Aug 2019 03:03 PM PDT Got a friend who has hinted at being open to the idea of the earth being flat. I'm trying to preemptively bolster some counter arguments with something real and relatable like, "if the earth wasn't round we'd have no satellite tv, or we wouldn't have to compensate for it in building railroads"(not sure if those are true, just tying to get my point across), etc. Thank you!! submitted by /u/Gnarlemance [link] [comments]

How do scientists measure the temperature of particles collided with the LHC? Posted: 15 Aug 2019 10:50 AM PDT I read an article saying that scientists had managed to measure temperatures of 5.5 trillion degrees celsius by colliding two lead ions at the LHC. How can they measure this? Also could these high temperatures damage the inside of the collider? submitted by /u/Cozmik1Dr [link] [comments]

Could scientists measure if the physical constants were constant throughout time? Posted: 15 Aug 2019 02:25 PM PDT If the physical constants changed in anyway at some point in the past, would their be a way to test or measure this? submitted by /u/mrhouse1101 [link] [comments]

I understand that any collision has a coefficient of restitution that determines how much kinetic energy is transferred between the two objects. But collisions also produce sound and heat. What decides how much of the total energy is converted to these other forms respectively? Posted: 15 Aug 2019 01:11 PM PDT submitted by /u/SpartanAB117 [link] [comments]

Do the black hole Sagittarius A* at the center of our Milky Way have any effect on the galaxy's movement/rotation? Posted: 15 Aug 2019 06:29 PM PDT submitted by /u/blazap247 [link] [comments]

You are subscribed to email updates from AskScience: Got Questions? Get Answers.. To stop receiving these emails, you may unsubscribe now.	Email delivery powered by Google
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AskScience AMA Series: We are Drs. Brandy Beverly, Kimberly Gray, Pauline Mendola, Carrie Nobles, and Beate Ritz. We study how environmental factors, like air pollution, affect child health and development. Ask us anything! #WomenInScience

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• AskScience AMA Series: We are Drs. Brandy Beverly, Kimberly Gray, Pauline Mendola, Carrie Nobles, and Beate Ritz. We study how environmental factors, like air pollution, affect child health and development. Ask us anything! #WomenInScience
• Can trees get cancer/tumors? And how does radiation affect them?
• Why does dF/dt = {F,H} in the context of Poisson brackets revealing transformations under symmetries?
• What is a Drift Wave in a plasma?
• What does contact mean regarding to the annihilation of matter and antimatter particles?
• Since magnetic declination changes over time, is it just a coincidence that currently, magnetic north and true north are roughly the same?
• Is biochar actually carbon negative?
• How do spiders know how to build their webs to be secure and structurally secure?

AskScience AMA Series: We are Drs. Brandy Beverly, Kimberly Gray, Pauline Mendola, Carrie Nobles, and Beate Ritz. We study how environmental factors, like air pollution, affect child health and development. Ask us anything! #WomenInScience Posted: 15 Aug 2019 04:00 AM PDT When most people think of the "environment," they may think of green spaces, buildings and sidewalks, and air and water. In the context of child health, environment includes conditions in the womb as well as situations that exist before conception. Managing environmental factors and exposures before, during, and after pregnancy may help protect child health. Understanding how environmental factors affect pregnancy and child development is a priority for the Eunice Kennedy Shriver National Institute of Child Health and Human Development (NICHD) and the National Institute of Environmental Health Sciences (NIEHS), two components of the National Institutes of Health. NICHD and NIEHS support and conduct research on the environment and health, both on our campuses and through grants to other organizations and universities. Today's hosts are experts in air pollution and its effects on child health, pregnancy, and reproductive health and on how exposures during pregnancy can influence children's later health. Brandy Beverly, Ph.D., health scientist in the Office of Health Assessment and Translation in the National Toxicology Program, headquartered at NIEHS. Dr. Beverly conducts literature-based evaluations to determine whether environmental chemicals are hazardous to human health. Her most recent work focuses on the impact of traffic-related air pollution on hypertensive disorders of pregnancy because of its potential long-term effects on mother and child. When she is not conducting research, Dr. Beverly enjoys performing as a violinist in the Durham Medical Orchestra. Kimberly Gray, Ph.D., program officer in the Population Health Branch in the Division of Extramural Research and Training who manages NIEHS' grant portfolio on children's health. This includes research on how prenatal exposure to air pollution and other environmental chemicals disrupt early brain development. These early changes may lead to cognitive, emotional, and behavioral problems that are detected later in development. Because these chemical exposures are more common among minority populations and underserved communities, they are believed to be major contributing factors to health disparities within our population. Dr. Gray spends time outside of the office with her family and their menagerie of furry animals (hairy children), who fill her soul with joy. Pauline Mendola, Ph.D., principal investigator in the Epidemiology Branch of the Division of Intramural Population Health Research at NICHD. Dr. Mendola studies how air pollution and extreme environmental temperatures affect pregnancy and child development. She's involved with the Consortium on Safe Labor and Consecutive Pregnancy Study and the Longitudinal Investigation of Fertility and the Environment (LIFE) Study. Dr. Mendola was a cashier in a bookstore before she got a job coding health surveys at the University at Buffalo, and the rest is history. Carrie Nobles, Ph.D., postdoctoral fellow in the Epidemiology Branch at NICHD. Her recent research explores how ambient air pollution (fine particulate matter from cars, industries, and homes) affects the risk of hypertension and preeclampsia during pregnancy. Carrie was a piano performance major as an undergraduate and first learned about public health during an elective course her junior year of college. Beate Ritz, Ph.D., professor of Epidemiology and Environmental Health Sciences at the University of California, Los Angeles Fielding School of Public Health and a researcher supported by NIEHS. Her research has shown that traffic and combustion related air pollution increases the risk of numerous adverse pregnancy outcomes (preterm birth, low birth weight, preeclampsia) and adversely affects neurodevelopment, resulting in autism spectrum disorder. She currently is responsible for assembling adverse birth outcome studies worldwide as part of the NASA MAIA project. Dr. Ritz's personal office is a treehouse with a view over the Santa Monica mountains. submitted by /u/AskScienceModerator [link] [comments]

Can trees get cancer/tumors? And how does radiation affect them? Posted: 14 Aug 2019 09:17 PM PDT I'm watching chernobyl right now, and I know some of the effects radiation has on people (both high and low amounts) but once the show did a shot over a forest i wondered what the effect on plant and tree life would be. submitted by /u/Pointree [link] [comments]

Why does dF/dt = {F,H} in the context of Poisson brackets revealing transformations under symmetries? Posted: 15 Aug 2019 08:58 AM PDT In general, taking the Poisson bracket of a function with a quantity that is conserved under a coordinate transformation will give the change in that function under the transformation. I know that H is conserved if there is no explicit time dependence in a system. So, it should follow that {F,H} should give something like the partial derivative of F with respect to time, only taking into account its explicit time dependence. Clearly, though, this is wrong, and instead it gives the complete time derivative, which is slightly different from the transformation that conserves H. Where am I going wrong here? submitted by /u/Platyturtle [link] [comments]

What is a Drift Wave in a plasma? Posted: 15 Aug 2019 06:34 AM PDT Basically please can some explain in lay person's terms, what is a Drift Wave in a plasma? submitted by /u/pseudonym1066 [link] [comments]

What does contact mean regarding to the annihilation of matter and antimatter particles? Posted: 14 Aug 2019 06:49 AM PDT The wikipedia does state that a contact of a matter particle with an antimatter particle will result in their mutual annihilation. But how close is contact? Is the distance between the two hydrogen atoms in a hydrogen molecule already close enough if one of them would be an antimatter hydrogen atom? Or would even the average distance between two hydrogen molecules close enough? Or does it have to be a close contact like an antiproton is hitting directly the core of a hydrogen atom. submitted by /u/Plaqueeator [link] [comments]

Since magnetic declination changes over time, is it just a coincidence that currently, magnetic north and true north are roughly the same? Posted: 14 Aug 2019 08:02 AM PDT The point on Earth that a compass needle is attracted to (magnetic north) is not the same as the true north, the point where the rotational axis of the Earth emerges. In fact, the location of the magnetic north pole varies substantially over time, even over the course of just a few years. Does that mean that those points being still (relatively) close together is just a coincidence that happens to be true today, and that in general, any point on Earth can become the magnetic north? And if that is the case, are all of them equally likely over time? submitted by /u/iwanttobepart [link] [comments]

Is biochar actually carbon negative? Posted: 14 Aug 2019 08:57 AM PDT Hi r/askscience , I am looking into biochar and have read some nature.com articles, however I still have a question. How do the emissions produced when making biochar compare the carbon that is sequestered by it? Links and figure preferred so I can use them myself. If anyone knows a soil scientist or anyone that could help and would be willing to have a conversation, please put me in touch! Thank you. submitted by /u/Griff1619 [link] [comments]

How do spiders know how to build their webs to be secure and structurally secure? Posted: 14 Aug 2019 06:55 AM PDT Outside my office (I take frequent walks and get to observe them) I see a ton of spider webs. and a bunch have used our handicap spots as base. As I walk by I notice how intricate they are, how they have a web that goes all the way to the ground to stabilize, and (for the part that blows my mind) it connects between the next handicap sign and has another web setup there as well. How do Spiders know how to do this? Is this all written into their genetic code? submitted by /u/greene81990 [link] [comments]

You are subscribed to email updates from AskScience: Got Questions? Get Answers.. To stop receiving these emails, you may unsubscribe now.	Email delivery powered by Google
Google, 1600 Amphitheatre Parkway, Mountain View, CA 94043, United States

Does the efficiency or power consumption of electronics change with temperature?

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• Does the efficiency or power consumption of electronics change with temperature?
• AskScience AMA Series: I'm Dr. Haider Warraich, a cardiologist who wrote a new book on humanity's greatest killer: heart disease. Ask me anything!
• Why is the Southeastern US humid despite sharing latitude with arid North Africa?
• Why Do We All Generally Agree On What Creatures Are Cute or Grotesque?
• Ask Anything Wednesday - Economics, Political Science, Linguistics, Anthropology
• Do hormones in diet get broken down before they can work?
• Do protist supergroups Excavata and Chromalveolata have cell walls? What type of reproduction do they have? What are their modes of nutrition?
• Why do some drugs work in microgram doses while others need milligrams or more?
• Why does count of RBCs increase during emotional upset ?
• Are hadron collider essentially nuclear fusion reactors?
• How do micro-plastics affect the body when ingested?
• Why do some animals bother storing their urine in bladders and feces in rectums? Why don't all animals just eject their waste immediately?
• Are peripheral and central neurons structurally different?
• How does plasma behave different from each other and also from normal fluid flow?
• Are adhesion zones (aka Bayer's junctions) physiological bacterial features or just fixation artifacts?
• The universe is expanding, and it seems this expansion is accelerating. This is the main argument against the Big Crunch theory. My question is why is it not possible that we are just seeing the first part of the expansion?
• Why don't intestines knot up like earbuds?
• Are histones only present during mitosis?
• What is it about the quality of pitch-shifted audio (e.g. Alvin and the Chipmunks) that makes the human ear able to perceive that it's pitch-shifted, not people singing in a higher/lower key?
• How does the depth of water table affect drainage time? (hydrogeology question)

Does the efficiency or power consumption of electronics change with temperature? Posted: 14 Aug 2019 01:16 AM PDT I recently have decided to hella overclock a PC I built this year, and someone told me that the better the cooling is on the water cooling I'm going to be using the less potential power consumption there will be. He said the electrical resistance drops with temperature there by decreasing the necessary voltage, and quite possibly allowing for a higher overall overclock speed. Is that true and if so, what is the science behind that? submitted by /u/orionpewpew [link] [comments]

AskScience AMA Series: I'm Dr. Haider Warraich, a cardiologist who wrote a new book on humanity's greatest killer: heart disease. Ask me anything! Posted: 14 Aug 2019 04:00 AM PDT Heart disease still kills more people than any other disease in the world, yet there are so many myths, misconceptions and misinformation about it. I'm cardiologist Haider Warraich, author of the new book, State of the Heart - Exploring the History, Science and Future of Cardiac Disease (St Martin's Press, July 2019), where I break down the history of the heart, what we know about it today, and what we know about its future study. I write frequently for the New York Times, where you can read my Op Eds. See everyone at 12pm ET (16 UT), ask me anything! submitted by /u/AskScienceModerator [link] [comments]

Why is the Southeastern US humid despite sharing latitude with arid North Africa? Posted: 14 Aug 2019 03:55 AM PDT submitted by /u/emmazunz84 [link] [comments]

Why Do We All Generally Agree On What Creatures Are Cute or Grotesque? Posted: 14 Aug 2019 06:53 AM PDT How come as a species we all agree that things like cats, dogs, rabbits or even bats are cute or aesthetically pleasing while things like spiders and angler fish are considered grotesque and ugly. At first I figured it was an evolutionary thing such as an ingrained fear of spiders to keep us from being bit but by that logic we should find felines and canines ugly as they would have been dangerous to use too. Cougars and bears are considered cute. Is it traits that are closely related to us? But what about birds and even snakes being liked? How is it no one ever looks at a camel spider and wants to cuddle it when we can have such differing opinions on colours, architecture and art? submitted by /u/LoveScore [link] [comments]

Ask Anything Wednesday - Economics, Political Science, Linguistics, Anthropology Posted: 14 Aug 2019 08:13 AM PDT Welcome to our weekly feature, Ask Anything Wednesday - this week we are focusing on Economics, Political Science, Linguistics, Anthropology 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! submitted by /u/AutoModerator [link] [comments]

Do hormones in diet get broken down before they can work? Posted: 13 Aug 2019 02:58 PM PDT I've seen many claims about either detrimental or positive effects from consuming hormones as part of your diet. For example, plant oestrogens in soy milk, growth hormones and casein in milk. It seems to naïve me that in principle, all proteins should start to get hydrolysed in the stomach by HCl, pepsin, protease etc. Surely most of it is denatured/hydrolysed in the cooking process anyway! So apart from enzymatic/hormonal action in your mouth, can hormones/enzymes get absorbed and affect you? Would love to hear some science. Cheers, A Chemical Physicist submitted by /u/_Giraffacake [link] [comments]

Do protist supergroups Excavata and Chromalveolata have cell walls? What type of reproduction do they have? What are their modes of nutrition? Posted: 14 Aug 2019 07:57 AM PDT submitted by /u/emilysuh1234 [link] [comments]

Why do some drugs work in microgram doses while others need milligrams or more? Posted: 14 Aug 2019 07:50 AM PDT submitted by /u/americanmonty [link] [comments]

Why does count of RBCs increase during emotional upset ? Posted: 14 Aug 2019 07:49 AM PDT submitted by /u/HellBringer11 [link] [comments]

Are hadron collider essentially nuclear fusion reactors? Posted: 14 Aug 2019 07:28 AM PDT submitted by /u/not-too-chad [link] [comments]

How do micro-plastics affect the body when ingested? Posted: 14 Aug 2019 07:26 AM PDT submitted by /u/madastronaut [link] [comments]

Why do some animals bother storing their urine in bladders and feces in rectums? Why don't all animals just eject their waste immediately? Posted: 14 Aug 2019 06:23 AM PDT submitted by /u/muff_marauder [link] [comments]

Are peripheral and central neurons structurally different? Posted: 14 Aug 2019 05:43 AM PDT Do these neurons just serve different functions due to their location and connections, or is there something structurally different about them? I was reading about hot flatworms can remember things even after their brain is cut off and regrows, so I'm wondering if peripheral neurons could serve the same functions as CNS neurons, or if they are structurally different? submitted by /u/gmanflnj [link] [comments]

How does plasma behave different from each other and also from normal fluid flow? Posted: 13 Aug 2019 09:49 PM PDT submitted by /u/divineflare1411 [link] [comments]

Are adhesion zones (aka Bayer's junctions) physiological bacterial features or just fixation artifacts? Posted: 13 Aug 2019 11:18 AM PDT I have a question about bacterial physiology that I haven't been able to find a clear answer to in the literature. Specifically, I am wondering what the current status of the concept of adhesion zones or Bayer's junctions is. These refer to putative sites where the inner and outer membrane of gram negative bacteria are in contact or at least adjacent. My understanding is that between the late 60's and early 90's there was some imaging work and phage-based work supporting the hypothesis, but around 1990 criticism arose that these were artifacts of the chemical fixation methods and not present with cryofixation. I came across this doing some idle research on the mechanisms of chemical competence in E. coli - specifically, in Hanahan's chapter in Escherichia coli and Salmonella (Neidhardt), he suggests that pores formed from these zones of adhesion are a major route for DNA uptake. Following up a little on this, I came across the controversy, but wasn't able to find any resolution. The citing literature is fairly nonspecific and often just cites from the 60's and 70's so I'm not sure if there is a consensus as to whether these are actually existing structures or not. Some references: Bayer's original paper: https://www.microbiologyresearch.org/content/journal/micro/10.1099/00221287-53-3-395 Critical discussion: Kellenberger 1990 - https://www.ncbi.nlm.nih.gov/pubmed/2201866 Bayer's reply: https://www.sciencedirect.com/science/article/pii/104784779190052X submitted by /u/loves_to_barf [link] [comments]

The universe is expanding, and it seems this expansion is accelerating. This is the main argument against the Big Crunch theory. My question is why is it not possible that we are just seeing the first part of the expansion? Posted: 13 Aug 2019 11:01 PM PDT As far as I understand, in an explosion, the speed increases until there is no more combustible material to combust. Could we not just be in this phase of the explosion that was the Big Bang? I could have completely misunderstood the basic concepts here and I apologise if that is so. Please educate me. submitted by /u/vale-para-pura-pija [link] [comments]

Why don't intestines knot up like earbuds? Posted: 13 Aug 2019 11:53 AM PDT submitted by /u/Deleizera [link] [comments]

Are histones only present during mitosis? Posted: 13 Aug 2019 08:44 AM PDT Are histones only present during mitosis? Studying for Biology exam submitted by /u/Wistoft2410 [link] [comments]

What is it about the quality of pitch-shifted audio (e.g. Alvin and the Chipmunks) that makes the human ear able to perceive that it's pitch-shifted, not people singing in a higher/lower key? Posted: 13 Aug 2019 08:10 AM PDT submitted by /u/lapapinton [link] [comments]

How does the depth of water table affect drainage time? (hydrogeology question) Posted: 13 Aug 2019 08:38 AM PDT Darcy's law applied to falling head condition appears to indicate that ponded water on the surface would drain more quickly when the water table higher. i.e. nearer to the surface: t = L K ln (H_o/H_t) Where: H_o = the depth of ponded water plus the (original) depth to water table, H_t (and L) = the depth from the surface to the water table, K = hydraulic conductivity t = time But I am told that ponded water would drain more quickly when the water table is lower. What am I overlooking? submitted by /u/Outgrabe [link] [comments]

You are subscribed to email updates from AskScience: Got Questions? Get Answers.. To stop receiving these emails, you may unsubscribe now.	Email delivery powered by Google
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