Old & Odd: Archaea, Bacteria & Protists - CrashCourse Biology #35

Hank veers away from human anatomy to teach us about the (mostly) single-celled organisms that make up two of the three taxonomic domains of life, and one of the four kingdoms: Archaea, Bacteria, and Protists. They are by far the most abundant organisms on Earth and are our oldest, oddest relatives.

References:

Table of Contents
1) Archaea 03:23
a) Methanogens 04:02
b) Extremophiles 04:24

2) Bacteria 05:24:2
3) Gram Positive 06:50
a) Proteobacteria 07:15
b) Cyanobacteria 07:30
c) Spirochetes 07:42
d) Chlamydias 07:52

4) Protists 08:12
a) Protozoa 09:03
b) Algae 09:54
c) Slime Molds 11:13

Want to find Crash Course elsewhere on the internet?

[hansc.]

As a biology student at the university, knowing way more about the subject of these courses, I love your vids about biology and chemistry as a 'late night snack' but I recommend more pictures! They will improve explanation and remembering the key points. 

[ginevramancini]

Tomorrow I'll take an important exam to get into Med School in Italy. I have studied for the past two years alone as an autodidact and all these videos have been a huge support in my journey.
Thank you Hank and to all the members of CrashCourse!

[shrees]

you know you're super late to the party when there aren't only four kingdoms anymore...

[oo]

Crash Course Microbiology would be nice!

[kdk]

My dear Hank,
Magically you always seem to know what my exams are on because this is like the fourth time you've posted the exact video I needed days before an exam.

Thank you in advance for my B.Sc. :)
You're the

[hongrand]

Thumbs up if you're cramming for a test.

[LocoPedro]

"And Daniel Tosh's Mouth"

SHOTS FIRED YO XDD

[jillybeans]

So I come home today, dreading having to study for my biology quiz tomorrow on... archaea, bacteria & protists. Hank sir, you have an uncannily accurate sense of timing.

[MishitTennis]

sad you teach better than my professor who has won a nobel prize and has multiple PhD degrees... 

[kingdavidjapan]

This series is so well made and thought out! Thank for putting it out there for free so that as many as possible can expand their knowledge! Thumbs up, Hank. Thumbs up.

[jlklai]

Thank you for getting me an A on my test.

[Koalaslovesloths]

CLARIFIED - Gram Stain does NOT stain cell membrane, it stains the peptidoglycan CELL WALL

[RoxxyKaosGG]

I lost it when he said Protists are a "big crap circus" xD

[skylerclyne]

not gonna lie I’m really high and also really enjoying this. Thank you young adorable Hank.

[thingonometry-]

Thumbs up anyone with a test tomorrow!

[Tobhiyah]

I LOVE this Guy/show!!! So glad I took Biology so I can share these with my son. Favorite quotes, "like Daniel Tosh's mouth, Crap show & piles of barf"!! Call me a geek, but there's a good chance I'll watch these for fun even once I've finished my final today! Thanks for making science fun, interesting & funny!

[szhou]

Protists are honestly way too diverse to be classified all into one kingdom. What causes confusion is that the notion of classifying all other organisms as protists suggests that they all share the same phylogeny, which is anything but true.(ie. Brown algae and amoeba do not share recent common ancestors.) A great analogy would be the former system classifying eubacteria and archaea into the domain Monera, which does not truly reflect their evolutionary history (archaea are more closely related to eukaryotes). I hope that many more scientists start to debunk the notion of classifying organisms as "protists" simply because they "don't fit" and develop a system that truly reflects their evolutionary history (ie. adding more kingdoms--sorry biology students).

[ohmygawdbecky]

When I'm taking my Biology final tomorrow afternoon, I just know I'm going to be picturing that Sailor's Eye and Dog Vomit slime mold

[photelegy]

Wow, I only really knew him looking older. Here he looks so very young 😅😅

[Hamski]

Hahahaha just literally laughed out loud at “they’re scumbags” love this dude