Introduction to Biology: Crash Course Biology #1

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  • เผยแพร่เมื่อ 13 ก.ค. 2024
  • Biology is the study of life-a four-letter word that connects you to 4 billion years worth of family tree. The word “life” can be tricky to define, but a shared set of characteristics helps biologists identify living things. In this episode of Crash Course Biology, you’ll learn how all of life is connected, and why studying biology can help us better understand ourselves and our relationship to all living things.
    Chapters:
    Welcome to Crash Course Biology! 00:00
    Life's Characteristics 2:14
    Is a Virus Alive? 6:18
    Life Beyond Earth 8:52
    Biology and You 10:03
    All Life is Connected 10:44
    Review & Credits 11:59
    Sources: docs.google.com/document/d/1G...
    This series was produced in collaboration with HHMI BioInteractive, committed to empowering educators and inspiring students with engaging, accessible, and quality classroom resources. Visit BioInteractive.org/CrashCourse for more information.
    Check out our Biology playlist here: • Biology
    Watch this series in Spanish on our Crash Course en Español channel here: • Crash Course Biología
    Crash Course Biology is hosted by Dr. Samuel Ramsey. Learn more about him here: www.drsammy.online/
    ***
    Crash Course is on Patreon! You can support us directly by signing up at / crashcourse
    Thanks to the following patrons for their generous monthly contributions that help keep Crash Course free for everyone forever:
    Katie, Tori Thomas, DL Singfield, Ken Davidian, Stephen Akuffo, Toni Miles, Steve Segreto, Kyle & Katherine Callahan, Laurel Stevens, Burt Humburg, Allyson Martin, Aziz Y, Perry Joyce, Scott Harrison, Mark & Susan Billian, Alan Bridgeman, Rachel Creager, Breanna Bosso, Matt Curls, Jennifer Killen, Jon Allen, Sarah & Nathan Catchings, team dorsey, Trevin Beattie, Eric Koslow, Jennifer Dineen, Indija-ka Siriwardena, Jason Rostoker, Siobhán, Ken Penttinen, Nathan Taylor, Les Aker, William McGraw, ClareG, Rizwan Kassim, Constance Urist, Alex Hackman, Pineapples of Solidarity, Katie Dean, Stephen McCandless, Wai Jack Sin, Ian Dundore, Justin, Mark, Caleb Weeks.
    __
    Want to find Crash Course elsewhere on the internet?
    Facebook - / youtubecrashcourse
    Twitter - / thecrashcourse
    Instagram - / thecrashcourse
    CC Kids: / crashcoursekids

ความคิดเห็น • 289

  • @vlogbrothers
    @vlogbrothers ปีที่แล้ว +1034

    Very grateful to Dr. Sammy for keeping the Aristotle jokes alive. So excited for this series!!!! -John

    • @johnchessant3012
      @johnchessant3012 ปีที่แล้ว +9

      hi John

    • @Teo117
      @Teo117 ปีที่แล้ว +4

      😁😁😁

    • @jakefrechette3224
      @jakefrechette3224 ปีที่แล้ว +12

      Y'all have found some amazing hosts over the years and Dr. Sammy is absolutely no exception! I am really looking forward to the rest of Crash Course Biology 2.0 with them!

  • @strange_thing-arra-3692
    @strange_thing-arra-3692 ปีที่แล้ว +162

    YES im so happy that the newer crash course biology is here! Although i do miss hank, this guy teaches really nicely

  • @Joe-nh8eq
    @Joe-nh8eq ปีที่แล้ว +306

    I'll admit I was slight disappointed when Hank didn't appear, but damn Dr.Sammy absolutely crushed it. Fun, oozing with passion... Good stuff. Look forward to reviewing the wonderful world of biology with you.

  • @drawyourownlife
    @drawyourownlife ปีที่แล้ว +196

    Used the old Crash Course at the time it came out and was a biology student myself. This new version is refreshing, yet I feel it's more oriented to highschoolers. (which is fine, I will this when teaching) Maybe it's because I'm older, or because this first ep is just introducing biology, I'm curious how it will grow further. So thanks for making a wider oriented version of Crash Course!

    • @The_Serpent_of_Eden
      @The_Serpent_of_Eden ปีที่แล้ว +41

      I'm loving it, it seems like it's starting a little more "at the bottom" of things, which I think is important in this day and age. So many people have been denied even this most basic introduction to biology, so I'm glad CC is addressing it. Great work as always!

    • @WCOBDisorder
      @WCOBDisorder ปีที่แล้ว +17

      I did too when I was in High School, and next year I will be teaching AP Biology. So many great resources for the next generation of science students!

  • @G-Tarun
    @G-Tarun ปีที่แล้ว +53

    I first saw Dr. Sammy on Khan Academy's new Biology course, and now on CC Bio 2.0! This intro is so masterfully crafted and delivered - I can see how you learnt from the best of Crash Course innovations across subjects, and combined it with Dr. Sammy's gift for teaching all things life in his inimitable, engaging style!
    This structure of listing out the characteristics of life without sounding like a monotonous textbook - it makes me think a similar format could be followed for a Crash Course Consciousness/Cognitive Science, if you do eventually make it! I do suggest a 50-episode Consciousness over a shorter CogSci series, since it's important to understand it from as many perspectives as possible - global philosophy, neuroscience, psychology, evolution, linguistics, comparative behavioural biology, etc. Also maybe a super-applied Behavioral Science course too, focusing on how psychology-meets-economics-meets-ethics helps us build a better world.

  • @elstankydank3815
    @elstankydank3815 ปีที่แล้ว +23

    I Iiterally just finished Hank's edition of Biology crash course and now I hear there is another 50 episodes?!!
    I am here for it❤🤓

  • @RogueWolfArtist
    @RogueWolfArtist ปีที่แล้ว +82

    Bright & Cheery narration style is a hard thing to nail without it being grating and no one did it like Levar Burton, and you have channeled him to near perfection. Great work, man. Never change.

    • @secondstar101
      @secondstar101 ปีที่แล้ว +3

      This!

    • @osmia
      @osmia ปีที่แล้ว +1

      +

    • @OlTrev
      @OlTrev ปีที่แล้ว +1

      Yes I said the same thing!

  • @starch7993
    @starch7993 ปีที่แล้ว +10

    Dr. Sammy is SUCH a favourite science communicator of mine and as much as Hank will be missed, Sammy introduces such a new and engaging style of teaching and I'm SO insanely excited. Got me coming back to crash course for the first time since high school!

  • @Snailgodonion
    @Snailgodonion ปีที่แล้ว +24

    Finally a remake of the classical series. I’m really looking forward to all future episodes! Almost got my bachelor’s in biology, so this series will surely come in handy if they go deep enough into detail. Hopes are up! I’m cheering you on Dr. Sammy!

  • @DavidTullyPhD
    @DavidTullyPhD ปีที่แล้ว +40

    Dr. Sammy is going to be a standout host. Excited for this series, despite (especially because?) the time between now and my last bio quiz can be measured in decades.

  • @niecchan
    @niecchan ปีที่แล้ว +10

    I studied biology in university and I am so loving this video! Thank you Crash Course. May you always be successful!

  • @ShakalDraconis
    @ShakalDraconis ปีที่แล้ว +30

    I personally prefer one of the newer approaches to the whole "are viruses alive" question, viewing the infected cell as the actual organism, and the viral load as the means of reproduction. In this way the virus is more akin to a mote of pollen.
    Now PRIONS, THOSE are the TRUE edge case!

    • @gee8419
      @gee8419 ปีที่แล้ว +5

      Personally my college virology teacher told us to save the question of if viruses are alive for our philosophy classes 😂 Virologists routinely refer to a virus as alive if it is capable of replicating.

    • @ClementinesmWTF
      @ClementinesmWTF ปีที่แล้ว +7

      Prions and self-replicating RNA/DNA are definitely the edge cases. Viruses I think should be redefined at least as a part of life, if not organisms in their own rights. The definitions of “life” are much like definitions of “species”: sure, they may seem obvious on the surface, and many definitions do align, but there are so many differences and edge cases for each that it may just be better to be as inclusive as possible while noting the intricacies rather than excluding and making half-excuses for why the definition includes this but excludes others.

    • @venkatchait007
      @venkatchait007 ปีที่แล้ว +2

      you can also just think of host cells as the viruses environment, as a chemical system the viruses reliance on the existence of host cells is really no different from our reliance on the existence of an atmosphere or plants reliance on sunlight.

    • @Human-san
      @Human-san ปีที่แล้ว +1

      They're also really scary...

  • @doomedmessenger
    @doomedmessenger ปีที่แล้ว +19

    He's a really good pick for this Biology-redux. Think he's one of the most Hank-like presenters so far, which is a compliment to him. ^^ Love his energy. I'll be keeping an eye on this Crash Course session.

  • @unknownscryptid
    @unknownscryptid ปีที่แล้ว +5

    crash course biology helped me out so much in high school. I'm a biology major in college now doing undergrad research this summer and was just joking yesterday about how I may need crash course biology. impeccable timing

  • @alexreid1173
    @alexreid1173 ปีที่แล้ว +7

    It’s so nice to see an updated series! I watched these when I was taking biology in high school. I’ve taken a lot of college biology and ecology classes now, so it’s cool to watch these from a new perspective. (PS: updated, full length ecology series? would love that)

  • @EyeLean5280
    @EyeLean5280 ปีที่แล้ว +10

    The Hank Green CC Biology series is a tough act to follow - but they clearly picked the right person to do so! Great episode, and I'm so looking forward to the rest of the series!

  • @shrimpytcoon
    @shrimpytcoon ปีที่แล้ว +416

    What is life? life is pain

    • @Jaaxfo
      @Jaaxfo ปีที่แล้ว +30

      Baby don't hurt me, don't hurt me
      No more

    • @hansolowe19
      @hansolowe19 ปีที่แล้ว +5

      Painnnnnnn 🤌😠

    • @ashog1426
      @ashog1426 ปีที่แล้ว +5

      Baby don't hurt me don't hurt me no more...

    • @emilytopham5069
      @emilytopham5069 ปีที่แล้ว +13

      Anyone who tells you any different is selling something --The Princesss Bride

    • @AmyraCull
      @AmyraCull ปีที่แล้ว +2

      Can confirm

  • @ananya.a04
    @ananya.a04 11 หลายเดือนก่อน +8

    I love CrashCourse. It’s a lifesaver for me when I want to revise important concepts quickly. Even though I miss Hank’s narration, the new style is really charming too with the smart puns! Thank you to the entire team for bringing us such high quality content for free! Keep up the good work guys! 😊✨

  • @clairematheson7153
    @clairematheson7153 ปีที่แล้ว +9

    So excited for this series! I got my bachelors in lit but have been wanting to find free (and intro-level) resources to learn more about science. This is perfect!!!

  • @hc6628
    @hc6628 ปีที่แล้ว +5

    Thank you for remaking this series! I'm about to apply for teacher training specialising in Biology, even though my degree is in Psychology - so it's a perfect refresher that'll get me to where I want to be even faster! Keep up the amazing work, Dr Sammy! :))

  • @amandanorton6508
    @amandanorton6508 ปีที่แล้ว +3

    The new Botany series and now this! I love the new stuff they are putting out and I'm looking forward to episode 2

  • @JHaven-lg7lj
    @JHaven-lg7lj ปีที่แล้ว +5

    I’m so looking forward to this whole series, it’s my first Crash Course!

  • @luisvasquez9604
    @luisvasquez9604 ปีที่แล้ว +2

    I love the addition of Dr. Sammy, can’t wait to see more episodes!

  • @ChimeraZone
    @ChimeraZone ปีที่แล้ว +7

    Hank is a legend, but Sammy is perfect for hosting this topic. Also bless you, Hank.

  • @KillerTacos54
    @KillerTacos54 ปีที่แล้ว +11

    Dr Sammy did an incredible job in this video. This made me very excited for the rest of the series

  • @ernestopreciado4895
    @ernestopreciado4895 ปีที่แล้ว +2

    I very much like the definition of life that Hank onces gave in Dear Hank & John, "something is alive when it needs something, and then does something to get it"

  • @nateweinand4209
    @nateweinand4209 ปีที่แล้ว +5

    This is going to be a great series! Dr. Sammy is a great host!

  • @scottlott3794
    @scottlott3794 ปีที่แล้ว +2

    This guy sounds like LeVar Burton when he did Reading Rainbow back in the day. Gives me goose bumps!

  • @5Seed
    @5Seed ปีที่แล้ว

    I'm so pumped for this and botany. Loving getting back into crash course

  • @biointeractive
    @biointeractive ปีที่แล้ว +10

    So excited for this series! 💚

  • @kmcsciguy
    @kmcsciguy ปีที่แล้ว +2

    Very excited for the Biology series update!

  • @summer37x
    @summer37x ปีที่แล้ว +2

    Love biology, love your voice. I'm so excited for this series.

  • @seancreighton9154
    @seancreighton9154 ปีที่แล้ว +22

    This is going to be one of the best Crash Course series yet! Cheers to science!👨‍🔬

  • @mitchilaine
    @mitchilaine ปีที่แล้ว +4

    I am soo thrilled with this first episode! I think they're following a textbook (from openstax?) or just maybe the very beginning of biology. At school, we jump straight to cells and so on, so this was such a nice kickstart. I may not be taking biology(future pharmacy student here), but i sure am gonna love this series and love the subject even more.

  • @MarcoNicolasBongiovanni
    @MarcoNicolasBongiovanni ปีที่แล้ว +2

    I already want the next episode lol, this introduction got me excited, biology is not my field of study, but I still love to learn about it nonetheless, also, I kinda miss Hank, but this host is awesome and really chill, I'm really excited for this new course!

  • @pedrorumoafluencia9245
    @pedrorumoafluencia9245 ปีที่แล้ว

    Amazing stuff. Looking Forward to the next lessons!!

  • @nietzschescodes
    @nietzschescodes ปีที่แล้ว

    Nice! A 2nd Crash Course Biology Series!! Great idea!!!

  • @patrickmccartney2418
    @patrickmccartney2418 ปีที่แล้ว +5

    It seems the question of “What is life?” is very similar to the question “What is free will?”

  • @soluckyjb
    @soluckyjb ปีที่แล้ว

    Thanks for this great video, Dr. Sammy!

  • @stuck_around
    @stuck_around ปีที่แล้ว +7

    waiting 12 years for this

  • @funkykong9001
    @funkykong9001 ปีที่แล้ว +2

    I wish there was a way to get notifications just for specific CrashCourse courses like this one

  • @AriaHarmony
    @AriaHarmony ปีที่แล้ว +1

    I love that you mentioned the connection to the reset of the universe! I like to think that everything is the hydrogen atoms from the beginning of the universe, fusing into heavier elements, and temporarily wearing different forms as time goes by.

  • @hand.2
    @hand.2 ปีที่แล้ว +2

    in my 2nd year of biology at university, this'll be a fun way to refresh my mind on the basics :)

  • @nathanespinosa3463
    @nathanespinosa3463 ปีที่แล้ว +2

    Right when i finish my AP Biology class too

  • @camiloiribarren1450
    @camiloiribarren1450 ปีที่แล้ว +1

    I love this. This is what I got my BA in and love your lecture

  • @johndoe-qo8cy
    @johndoe-qo8cy ปีที่แล้ว +10

    What is life? Baby don't hurt me, don't hurt me

    • @Yazan_Majdalawi
      @Yazan_Majdalawi ปีที่แล้ว

      He did not answer. Really.

    • @ZosoLU
      @ZosoLU ปีที่แล้ว +2

      , no more.

  • @MakoWoman
    @MakoWoman ปีที่แล้ว

    Brooo I’m so excited for this series!!!

  • @redcaramel2222
    @redcaramel2222 ปีที่แล้ว

    FINALLY!!!! Excited for this one. ☺

  • @kesienabezi7327
    @kesienabezi7327 11 หลายเดือนก่อน

    Wow! I love this. Thank you Dr Sammy

  • @RogueWolfArtist
    @RogueWolfArtist ปีที่แล้ว +1

    Been waiting my whole life for this.

  • @IvartheScientist
    @IvartheScientist ปีที่แล้ว +2

    this was such a great intro video!

  • @davidsubotic9239
    @davidsubotic9239 ปีที่แล้ว +2

    Thanks!

  • @Kiwironic
    @Kiwironic ปีที่แล้ว

    Oh finally, I love this, no voice fry, but still fresh, cool and modern. Thank you

  • @drakonnos
    @drakonnos 2 หลายเดือนก่อน

    I love your energy, Dr Sammy!

  • @dragonetafireball
    @dragonetafireball ปีที่แล้ว

    Nice I was just looking for a basic biology refresher because I’m going into university for it so this is good timing

  • @malikpiara
    @malikpiara ปีที่แล้ว +1

    The bee in the end is so cute.

  • @MrARock001
    @MrARock001 ปีที่แล้ว +2

    One of the most convincing arguments to me for viruses being "alive" is considering the virus particle itself as being only one phase of the organism's life-cycle. Like, the virus particle is effectively a spore from a fungus which can't do anything on its own, but needs to land in a suitable environment (like a living cell) in order to grow to maturity. The implication of that is that the true "adult" form of a virus is just an infected host cell, which has almost no other function than to reproduce.

  • @isacami25
    @isacami25 ปีที่แล้ว

    it was so interesting to see both this video and the one in spanish. I love that you're doing that, i can now show it to my nephews

  • @storm1968eu
    @storm1968eu 11 หลายเดือนก่อน +1

    my favourite subject in middle school waaaaay back when ... 🌱

  • @grahamb62
    @grahamb62 ปีที่แล้ว

    So well presented looking forward to this thank you 😊

  • @Go4Noctis
    @Go4Noctis ปีที่แล้ว +3

    New crash course bio nice. Interested to see what we have to learn.

  • @gabijagorobecaite8037
    @gabijagorobecaite8037 10 หลายเดือนก่อน

    AMAIZING! Thank you so much!!!

  • @phosphortea5645
    @phosphortea5645 5 หลายเดือนก่อน +1

    this is how i cram for my bio midterm

  • @Retronize84
    @Retronize84 ปีที่แล้ว +3

    I recently got interested in fungi and thought it would be cool to see some other Biology videos. I remembered I used to watch CrashCourse ages ago and thought there must be a CrashCourse on Biology too so I looked it up and saw this was uploaded 1 day ago!!!!? What a crazy coincidence. The only downer is that I can't binge watch it because the next episodes aren't out yet >.< Really looking forward to this series!

  • @james__anna_burns4885
    @james__anna_burns4885 ปีที่แล้ว

    very excited for this series!

  • @branhan215124
    @branhan215124 ปีที่แล้ว +1

    Damn dude came out swinging- not since Phil Plait (imho) has their been a host on Crash Course who just oozed charisma from the word go, I am so psyched!

  • @OlTrev
    @OlTrev ปีที่แล้ว

    Dr. Sammy is giving me serious LaVar Burton on Reading Rainbow vibes, his voice and his enthusiasm. I'm here for it.

  • @floodedbrain9564
    @floodedbrain9564 ปีที่แล้ว

    it's here!! it's finally here

  • @oganvildevil
    @oganvildevil 3 หลายเดือนก่อน

    Ok really digging Doc Sammy's presentation

  • @venkatchait007
    @venkatchait007 ปีที่แล้ว +1

    I like the NASA definition of life, keeping it simple is the way to go.

  • @nimbuscloud5175
    @nimbuscloud5175 7 หลายเดือนก่อน

    Genuinely thought/hoped this was voiced by Levar Burton at first, while not watching the video. Am disappointed it isn't, but Dr. Sammy does an excellent job and I love his energy!

  • @dreadnought1109
    @dreadnought1109 ปีที่แล้ว +1

    Guy gave me Levar Burton vibes. Excellent

  • @feitocomfruta
    @feitocomfruta ปีที่แล้ว +6

    Not gonna lie, I thought they already did a biology course. But I’m looking forward to this one!

    • @mbuhtz
      @mbuhtz ปีที่แล้ว +5

      They did. This is a remake because Bio was one of the very first courses they did so long ago

    • @JodyBrownIV
      @JodyBrownIV ปีที่แล้ว

      they did

  • @ragnkja
    @ragnkja ปีที่แล้ว +4

    Could you please provide closed captioning for this course? It would help a lot of people, especially when captioning allows people to watch the videos at a lower volume.

  • @sarelvanwyk693
    @sarelvanwyk693 ปีที่แล้ว +1

    Life is the most amazing thing that happened in the universe.

  • @kausikmr
    @kausikmr ปีที่แล้ว

    @CrashCourse I used to watch all you videos and I love it, CAN YOU PLS MAKE VIDEO ON NEUROMORPHIC COMPUTING.😃

  • @amandanorton6508
    @amandanorton6508 ปีที่แล้ว +1

    I'm obsessed with this

  • @billyfox6368
    @billyfox6368 ปีที่แล้ว +1

    You're starting this days before my A-level biology exams. 😂😭

  • @ClementinesmWTF
    @ClementinesmWTF ปีที่แล้ว +1

    I’m very glad this video spent so long on the conversation of viruses as an edge case of life and why that is not entirely the case. There is much debate, and I think a lot of biologists are really just stuck to the traditional definitions of “life” when excluding viruses without having a further thought on it. Sure, they are very different from bacteria and other life, but there is no objective reason why we should exclude them when they are so much more like life than they are like a mote of dust. I hope to see that further explored (as well as self-replicating molecules like prions, RNA, and DNA) in the future of the field rather than just coming up with more and more intricate excuses on why we should continue excluding them from the definition of life.

  • @ensemblelearner
    @ensemblelearner ปีที่แล้ว

    NEW CRASH COURSE? LETS GO!

  • @windk2123
    @windk2123 ปีที่แล้ว +1

    i have learned a lot. thank you

  • @FrogOnALilyFrond
    @FrogOnALilyFrond ปีที่แล้ว +2

    Hehe this has me excited for learning and im not even in school 🎉

  • @user-ei8bh2dj1r
    @user-ei8bh2dj1r 8 หลายเดือนก่อน +1

    This is a very informative video for educational purposes

  • @hidingzeus4306
    @hidingzeus4306 ปีที่แล้ว

    This guy sounds so much like LeVar Burton, I honestly wondered for a minute. Awesome stuff.

  • @daninindo
    @daninindo ปีที่แล้ว

    OMG so happy about this new series and the host! You better WERQ Dr. Sammy! 🎉🫰🏼🫰🏼🫰🏼🫰🏼

  • @VinnieGer
    @VinnieGer ปีที่แล้ว +2

    OH YEAH! LIFE BAY-BEE!!! PUMPED FOR MORE BIOLOGY

  • @wrenchip
    @wrenchip ปีที่แล้ว

    wish this came out a year earlier... love dr sammy

  • @Omni0404
    @Omni0404 ปีที่แล้ว

    4:24 "Fourth!" Lol I love this guy

  • @Leotique
    @Leotique ปีที่แล้ว +1

    Here for the new generation of Crash Course Biology

  • @girhelookittylover
    @girhelookittylover ปีที่แล้ว +1

    So excited for this series! Love the way you teach Dr.Sammy!!

  • @June-ft1cb
    @June-ft1cb ปีที่แล้ว

    OMG Dr. Sammy is so awesme ❤

  • @Ella-gp5nx
    @Ella-gp5nx ปีที่แล้ว +1

    This is going to save so many people in AP Bio

  • @oopsy444
    @oopsy444 ปีที่แล้ว

    i got so confused why theyre doing biology #1 when they already did until i realized im thinkning of pbs lol. funny how both decided to tackle biology almost at the same time. so glad they covered different stuff too

  • @christophergraffam3552
    @christophergraffam3552 ปีที่แล้ว +1

    2:08 Bees don’t have livers. The Varroa destructor mites target the fat bodies of the honey bee. I’m kind of impressed that this wasn’t caught given that the host was on the team that discovered that this was happening.

  • @johnmcho
    @johnmcho ปีที่แล้ว +1

    I'm a big fan of host Dr Sammy!

  • @dragonetafireball
    @dragonetafireball ปีที่แล้ว

    This is good timing for me

  • @Misslayer99
    @Misslayer99 5 หลายเดือนก่อน +1

    He's good, but i don't think anyone can beat Hank💚

  • @justjunkmale
    @justjunkmale ปีที่แล้ว

    I've been trying to decide whether or not to go to college for a degree in biology and then this crash course starts. I might do it 🤔
    the timing is wild.

  • @johnchessant3012
    @johnchessant3012 ปีที่แล้ว +1

    Finally! Now all that's missing is Crash Course Math. I guess math isn't really suited to this format, but I'd love a series on the history of math.

    • @bkbzgaming
      @bkbzgaming ปีที่แล้ว +1

      They could do a crash course calculus/trigonometry

  • @The_Entity
    @The_Entity ปีที่แล้ว +1

    pmsl at the Barry White part. love how this is presented - really interesting. I'm starting a Biology degree at 35 y/o in sept and am trying to soak up all the possible information I can before then :)