Are females soldiers in warhammer 40k augmented genetic or bionics?

Like adeptus sororitas, sisters of silence and female inquisitors. If they are not, how can they stand up to chaos space marines who are?

The same way anyone else that isn't a special snowflake space marine does?

Soritas none unless got some cybernetics for some reason, Sister of Silence are augmented, not sure how it's never talked about, Inquisitors vary...

And Some of them can stand up against chaos marines

Some get cybernetics. None bar perhaps the highest Inquisitor Lords get genemods, those are Admech only.

They kill Marines thr same way literally everyone else does, by shooting them in the face with very big guns, since they're nowhere near as tough as the factionwank here makes them out to be the vast majority of the time. Shoot one with a missile launcher and he dies.

By ... dying?

Heretics die like anyone else, by being engulfed in flames

I don't think humans in 40k are even the original baseline Homo Sapiens, not after the wild Dark Age of Technology.

What about saints like celestine?

Maybe but space marines are known to have vastly superior speed, reflexes, strength and regenerative capabilities and that is not even counting power armour yet

None of which does jack shit for a Marine when his entire upper torso has been transformed into meltagun smoke. They're good, but not anywhere close to that good, and remember there's only around a million Traitor Marines tops. Running into any would be absurdly unlikely and even if you do you can bring along three times their number in Kataphrons and Plasma and Battle Tanks and just roll over them unless they have other toys than just Marines.

It depends on the faction you're talking about. Different female factions have different advantages that'd help them stand-up to augmented enemies.

Adeptus Sororitas:
Although they don't have any genetic augmentations or abilities (they don't even allow psyckers) their War Gear is extremely advanced by Imperium standards. With Bolters, Power Armor, and even some Plasma weapons they're comparable to Space Marines in terms of their arsenal. They're also trained from birth to be devout members of the Imperial Cult and generally they're willing to fight to the last breathe. Compared to other Imperium factions they're basically immune to the corruption of Chaos as a result.

Sister of Silence:
There's not a ton of information about them in combat that I've found, but they're all blanks which gives them a handed edge against Psykers and Daemons, and their war gear is comparable to the legendary shit Custodes used to use. (Pic related)

Female Inquisitors:
Probably most likely to fuck an augmented enemies shit as they're just as likely to have cybernetic enhancements and there's no limit to the type of ear they could potentially have. They'd be just as likely to own Power Armor as Sororitas and Astartes, as well as any manner of equipment non-Inquisitors wouldn't be allowed to use.

Female Guardsmen:
Nothing. They just have flashlights and they'd die.

Building on this:

SoB bring numbers. Their convents and orders are each several thousand strong. No mater how good CSM are, something WILL hit them, and they burn just like anythig else. Maybe a little longer.

SoS augment other forces and deny chaotic enemies their warpfuckery, so it's levelling the playing field and then throwing greater numbers at it.

Female Inquisitors let their entourage and conscripted SM/other troops do the job.

Fenale IG just die, unless there's enough of them to replace every cubic inch of the battlefield with laser beams and explosives - simultaneously.

The saints?

Unclear. The only thing known for sure about them is that they are murder machines, mostly powered by raw faith in the God Emperor.

Saints are just straight up magic.

...

Power Armour works as a pseudo augmentation; makes you faster and stronger.

It depends on what you're looking at. Black Library books it could vary from writer to writer. Tabletop the only difference is T3 vs T4.

So all I have to do is walk around with my 700 billion Bros, all armed with top tier weapons and Im good?

A few thousand would suffice, or just drowning them in Guardsmen. CSM are if anything even more splintered than loyalists, you're unlikely to fight more than a couple hundred at once and grabbing melta and plasma weapons isn't hard in the slightest if you're a SoB, Inquisitor or Admech dude given even Guardsmen get plenty.

Sisters cant use plasma guns, who knows why

Not part of the holy trinity of Blessed Bolter, Purifying Prometheum and the searing wrath of the emperors light (Melta)

Still melta guns/inferno pistols kill space marines even better and don't blow up in your face

Those woman could probably fuck your brains out
Literally speaking

Boonies yes, genetics no.