/sci/ - Science & Math

[Anonymous No.10161876]

>he's not studying cell biology
PLEB

https://www.youtube.com/watch?v=y-uuk4Pr2i8

[Anonymous No.10161886]

>>10161876
Oh but I am my dear anon

[Anonymous No.10161930]

>>10161876
Is there really that much empty space in cells? Aren't they a tightly packed jumble of random crap?

[Anonymous No.10161939]

>>10161930
Even vacuum is not empty.
You probably mean intracellular matrix.
No it is not empty.

[Anonymous No.10161961]

>>10161876

[Anonymous No.10162454]

aand i have to fap now, thx anon

[Anonymous No.10163524]

>>10162454
you're welcome

[Anonymous No.10163538]

>>10161876
Sorry maria, I'm ready for my punishment now.

[Anonymous No.10163614]

>>10161876

Why does it walk? What happens if it falls?

[Anonymous No.10163670]

>>10161930
It's full of shit. Also way more chaotic than that video
https://www.youtube.com/watch?v=VdmbpAo9JR4&t=56s
more accurate simulation of what's going on in there.

[Anonymous No.10163701]

Does 4chan block journal articles or something? I'm trying to post shit from nature but it won't let me.

[Anonymous No.10163711]

>>10161930
Considering the enormous amount of reactions occurring on the intracellular space (metabolic reactions being some of the most important), I doubt there's any free space

[Anonymous No.10163715]

>>10163711
I find it hard to imagine how things happen so quickly though.

[Anonymous No.10163718]

>>10163670
Life looks really unsettling up close.

[Anonymous No.10163720]

>>10161930
>Random
This like looking at a machine and saying "look at all those random, loose jumbled parts", completely missing their order, structure, and often vertical organization. Cells are no different. Things are trafficked around with a decent degree of intelligence.

[Anonymous No.10163760]

>>10163720
I always found this really hard to visualize. How machine-like or intelligent can you really get when everything is made of chemical blobs reacting with each other in a big clump of biological jelly? Seems like magic to me

[Anonymous No.10163762]

>>10163760
>Seems like magic to me
Sometimes I feel the same way, thats why its so interesting

[Anonymous No.10163770]

>>10163760
People often fail to understand how complex The nervous system is. Look at these cortical neurons. Each one of those blue strands can either fire or not fire, multiple times per second. There are many, many connections between neurons, and there are billions of neurons in your brain. You don't have a simple metal circuit firing zeroes and ones. You have a flexible, microsopic entanglement of soft tissue, firing more zeroes and ones than the most powerful supercomputers on record.

[Anonymous No.10163836]

>>10163711
>Considering the enormous amount of reactions occurring on the intracellular space (metabolic reactions being some of the most important), I doubt there's any free space

And that so many will be detrimental to others and therefore are segregated in their own little intracellular organelles makes it mind boggling at all that activity going on at the same time without interfering with each other.

[Anonymous No.10163839]

Kind of random but is the extracellular matrix a soup of proteins or is it more like a rigid jello?

[Anonymous No.10163840]

>>10163715
molecules move fast. Very fast. Very, very, very, very fast. And their electric charges are proportional.

[Anonymous No.10163845]

>>10163840
If this is true then that makes sense, molecular behavior is just so foreign to me that it's hard to imagine. Thanks for the info anon

[Anonymous No.10163863]

>>10161876
i study this right now. specifically kinesins, well 1 specific one.
>>10163614
ATP walking cycle, basically conformational changes through hydrolysis of ATP which make it "walk". they do fall off all the time, but the video is incorrect, there are many attached to just one vesicle, so one falling off usually doesnt have a big effect.

[Anonymous No.10163866]

>>10163770
There are neuromorphic chip. Also it won't take long until most advanced computer will use 7nm, which is probably more tiny than axon and be at scale of several warehouses, which makes your point invalid.

But yes, it is complex. But computers are not simple at all, just explanation are more simple, maybe even parts, but it's complex operation is really on some beyond the point of complexicity one can effectively know it from one end to another.

Their interaction is however great thing to focus at.

[Anonymous No.10163946]

Ok just what the fuck is the purpose of autocringe signaling when you can just have that signaling molecule in the cells own cytoplasm? Is autocrine signaling always associated with paracrine signaling as well?

[Anonymous No.10163962]

>>10163866
I actually didn't know about the neuromorphic chips. I do know about how fast supercomputers are developing, and I didn''t want to knock computers, just wanted to emphasize the complexity of the brain.
Thank you for the info.

[Anonymous No.10164078]

>>10163946
>autocringe
kek'd

[Anonymous No.10164090]

>>10161876
I hate cell biology. Goddamn it. It's the hardest subject I've ever studied.

[Anonymous No.10164607]

>>10164090
I KNOOW MAN IT DOESN'T EVEN HAVE TO BE THAT DIFFICULT

[Anonymous No.10164628]

>>10163670
Man I'm an EE student now but I'm really glad I took that bio 2 class in college, still remember everything.

I've learned about every single thing named in that video but only now do I see it in action and how insane it all is in reality. Wish my bio teacher showed us this back then.

[Anonymous No.10164663]

>>10161930
no, shit is more localized, so effective concentration of macromolecules increases a fuck ton

[Anonymous No.10164666]

greetings cell bio fags, microbiologist here

pathogen I N V A S I O N activate

[Anonymous No.10164670]

>>10164663
Wait that's only eukaryotes right? Because they have organelle membranes?

[Anonymous No.10164681]

>>10164670
nope, prokaryotes too, remember DNA/proteins/lipids/carbs etc are all macromolecules. think of the amount of proteins that are present in vivo in a bacterial cell--all those things just bumping into each other, only able to access a really really small fraction of the solvent rather than the entire cytosol

it's kinda like if you were stuck in a crowded neighborhood pool, you can only go so far until you bump into another person (both applicable for prokaryotes and eukaryotes)

[Anonymous No.10164687]

>>10164681
I'm pretty sure prokaryotes can't get bigger than bacteria for that reason, because they don't have organelle membranes. But that's just a theory i just came up with.

[Anonymous No.10164696]

>>10164687
from what i've learned, cells (at least in the context of bacteria) are mostly just limited by membrane surface to cytoplasm volume ratio. but idk, depends on which prokaryotes and eukaryotes are being compared in terms of size.

[Anonymous No.10164705]

>>10164666
PATHOGEN BEGONE

[Anonymous No.10164711]

>>10164696
Ahh i see, but prokaryotes don't have nuclei or Golgi apparatus or any other nucleus related organelles. So what do they have intracellular membranes on their ribosomes and stuff? Or do they just not have organelle membranes?

[Anonymous No.10164721]

good thread

[Anonymous No.10164743]

>>10164711
naw their shit's pretty much just out in the open in the cytoplasm. so the ribosomes are pretty much translating shit immediately, DNA's kinda floating out in the "nucleoid" (AKA just a random non-enclosed part of the cell where the DNA is kinda bunching up), any energy-related processes normally associated with an organelle are relegated to the plasma membrane instead, etc

the planctomycetes phylum is a weird exception where their bacteria actually have some odd organelle thing tho

[Anonymous No.10164746]

>>10164705
NOOOOO MY FUCKING MEMBRANE

[Anonymous No.10164750]

>>10164743
Cool cool just as I suspected

[Anonymous No.10164779]

>>10164746
kek

[Anonymous No.10165670]

How do I into designer babies and/or artificial wombs? All my professors laugh at me when I bring it up.

[Anonymous No.10165841]

Are cells basically just bags of proteins doing things?

[Anonymous No.10166052]

>>10165841
Yes, but that downplays just how complex the genetics of the cell are.

[Anonymous No.10166097]

>>10163670

>40% of cytoplasm'd volume occupied by the substances
In addition to that, one teacher once told me that 70% of the membrane's are is occupied by proteins etc, which is interesting

[Anonymous No.10166209]

>>10166097
yup.
In reality the phospholipid bilayer you learned about in high school is the smaller piece of the pie

[Anonymous No.10166223]

>>10166052
I was mainly asking from a theoretical perspective. Obviously with the sheer number of proteins and other molecules that the bag has makes for a mindboggling complex nonlinear system of who knows how many variables, but at it's core most things are just jiggling around in there with a lot of structures inside to help some things move around?

[Anonymous No.10166400]

>>10166223
that's essentially it. a bunch of protein structures suspended in cytoplasm.

[Anonymous No.10166581]

question for the biologists in the room: could you make a lichen with glowing algae? pls no bully as ive stopped studying bio since AP in highschool, but as i remember lichens are
a symbiotic relationship between a fungus and algae. could you maybe knock the native algae out of an existing lichen (maybe with some selective poison or antibiotic) and introduce the glowing algae in its place? i want to make the kind that looks like really short grass and grows on tree trunks and old logs, preferably with a blue glow

[Anonymous No.10166606]

>>10164705
Brutal

[Anonymous No.10167433]

>>10165670
Your professors laugh at you because you cannot into designer babies. There's very few groups in the West working with genetic modification of embryos and that's just for research into early human development, they are aborted after a few weeks. So unless you are a long-time chinese researcher with ties to the communist party and funding from top-secret projects, you cannot into designer babies.

For artificial wombs just go into developmental biology, there should be groups working on animal models at the very least, but forget humans.

[Anonymous No.10168706]

>>10167433
no, they laugh because they're small dicked faggots afraid of change

[Anonymous No.10168724]

>>10166581
that bioluminescence gene that they've been putting into pigs and cats was derived from an animal, you'd have to see if it works on plants.
But if you're implying glowing algae already exists, it would just depend on how that species of algae works with the fungus