How did complex systems like our circulation system evolve? |
- How did complex systems like our circulation system evolve?
- I can switch between breathing from my mouth, my nose, or both, even with both of my mouth and nose open. Anatomically and physiologically, how does this happen? Also, how does the body switch between the right and left nostrils?
- Can you develop Autoantibodies against your own Blood group antigens?
- Can Maillard reaction happen by boiling food in conditions that raises water's boiling point (e.g. salted water or high atmospheric pressure)?
- Is the Covid incubation time shorter or longer for immunocompromised people?
- How many calories does the human body burn on average per day naturally when not excersising and just doing everyday things?
- Do people who have bullets or bullet fragments lodged in their bodies subsequently show symptoms of lead poisoning?
- Do animals with four legs utilise inverted pendulum gait to walk, or do they 'drag' their weight along one step at a time?
- would butyl group have more affinity towards Na+ or OH-?
- Can lifelong hayfever cause a reduced sense of smell?
- Would the pharmaceutical inhibition of dopamine receptor downregulation prevent the effects of addiction, both mental and physical? And if so, do we currently have a method of doing so?
- If the live virus smallpox vaccine can cause serious reactions in people with eczema—even just by being near someone vaccinated—how can someone with eczema safely move about society?
- Why does alcohol increase the likelihood of seizures in epileptics?
- Is it possible to keep a detached limb "alive" or prevent it from rotting for an extended period of time?
- Did all Caniforms evolve in North America?
- Can bacterial DNA be transferred into a plant genome?
- Does distance of food in a pan matters when cooking ?
- Could someone please explain why you can fill a glass with ice and also fill it all the way to the top with water and the ice can melt completely but the glass will never overflow?
- What happens after spermatogenesis completes?
| How did complex systems like our circulation system evolve? Posted: 10 Jun 2022 03:24 AM PDT I have a scientific background mainly in math and computer science and some parts of evolution make sense to me like birds evolving better suited beaks or viruses evolving to spread faster. These things evolve in small changes each of which has a benefit. But a circulation system needs a number of different parts to work, you need a heart at least 1 lung, blood vessels and blood to carry the oxygen around. Each of these very complex and has multicellular structure (except blood). I see how having a circulation system gives an organism an advantage but not how we got here. The only explanation I have found on the Internet is that we can see genetic similarities between us and organisms without a circulation system but that feels very weak evidence. To my computer science brain evolution feels like making a series of small tweaks to a computer program, changing a variable or adding a line of code. Adding a circulation system feels a lot more than a tweak and would be the equivalent of adding a new features that required multiple changes across many files and probably the introduction whole new components and those changes need to be done to work together to achieve the overall goal. Many thx [link] [comments] |
| Posted: 10 Jun 2022 03:20 AM PDT |
| Can you develop Autoantibodies against your own Blood group antigens? Posted: 10 Jun 2022 01:59 AM PDT |
| Posted: 09 Jun 2022 11:01 PM PDT |
| Is the Covid incubation time shorter or longer for immunocompromised people? Posted: 09 Jun 2022 09:49 PM PDT |
| Posted: 09 Jun 2022 09:19 PM PDT |
| Posted: 09 Jun 2022 09:37 PM PDT |
| Posted: 10 Jun 2022 02:29 AM PDT |
| would butyl group have more affinity towards Na+ or OH-? Posted: 10 Jun 2022 12:29 AM PDT I'm sorry, I'm a bit rusty on my chemistry. In a scenario where I am dealing with butanol and NaOH, would the butanol ( being partially miscible in water) easily release water and trade with OH- for Na+ from the NaOH? Or would it retain its hydroxyl group and ignore the polar Na+ ion? [link] [comments] |
| Can lifelong hayfever cause a reduced sense of smell? Posted: 10 Jun 2022 12:09 AM PDT I am in my mid 30s, and have had pretty severe nasal congestion caused by hayfever every summer for as long as I rememeber. I have noticed that I cannot smell lighter or faint smells, contrasted by my wife who must have supersmelly powers [link] [comments] |
| Posted: 09 Jun 2022 05:56 PM PDT I apologize if this question is too unclear or vague - I haven't done too much research on this topic and am merely spouting off my far-fetched shower thoughts after a high school biology class. [link] [comments] |
| Posted: 09 Jun 2022 11:22 PM PDT |
| Why does alcohol increase the likelihood of seizures in epileptics? Posted: 09 Jun 2022 10:50 PM PDT I've been told many times that it can interact poorly with medication (like increased drowsiness, irritability, etc.), but I've never been given a reason as to why it increases the risk of seizure when you drink, or how it affects our brains differently than non-epileptics. [link] [comments] |
| Posted: 09 Jun 2022 03:03 PM PDT |
| Did all Caniforms evolve in North America? Posted: 09 Jun 2022 09:52 PM PDT This should include bears, coyotes, wolves, racoons, etc. I'm not specialized in evolutionary history and wikipedia lingo is kinda hard to understand sometimes. [link] [comments] |
| Can bacterial DNA be transferred into a plant genome? Posted: 09 Jun 2022 03:57 PM PDT Asking because a friend told me that bacterial dna is added to plants to make them resistent to herbicide (GMO), and they could transfer their dna to other plants via pollen. This friend is pretty wack, but my genetics class was too long ago for me to remember anything so who knows!! [link] [comments] |
| Does distance of food in a pan matters when cooking ? Posted: 09 Jun 2022 03:07 PM PDT Hi ! It is a stupid question but I'm in a middle of cooking and it just came to me. Let's say I'm cooking diced chicken, in a big pan. Not enough to fill up the whole pan. Would the pieces cook faster if they are all together and touching or would they cook faster if spread on the pan ? I'm assuming the pan is heating evenly. Thanks !! [link] [comments] |
| Posted: 09 Jun 2022 10:00 AM PDT Have heard evaporation is the answer but this doesn't seem to make sense as that rate is variable depending on heat and humidity (?) so how can it always be true? Thank you in advance! 🙏 🧊 [link] [comments] |
| What happens after spermatogenesis completes? Posted: 09 Jun 2022 07:15 PM PDT Does your sperm reservoir become full? Is this when you get nocturnal emission and the body releases it? What happens if you ejaculate before 62-74 days completes? Does the sperm deplete and you have to start from scratch? [link] [comments] |
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