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Biology Professor
United States
Приєднався 22 жов 2013
Welcome to Biology Professor! 😊 I am Dr. Whitney Holden. I have a B.S. degree in Biochemistry and a Ph.D. in Microbiology & Immunology. I am a published research scientist 👩🔬 with over 15 academic publications. 🥼🔬 I now work in education and science outreach. 👍
Want a PDF of the final white board with all the answers written in? Check out my FREE NOTES here: tinyurl.com/BiologyProfessorNotes
On this channel, I will post videos on a broad range of topics in biology, with special focuses on cells 🦠, microbes 🧫, genetics 🧬, disease 😷, biochemistry 🧪, and more! I hope you learn a lot! Feel free to leave comments, questions, and requests. Subscribe now for help studying biology.
You can also follow me on Twitter at @DrWhitneyHolden. Happy learning! 😊👍
Icon designed from surang from www.flaticon.com
Want a PDF of the final white board with all the answers written in? Check out my FREE NOTES here: tinyurl.com/BiologyProfessorNotes
On this channel, I will post videos on a broad range of topics in biology, with special focuses on cells 🦠, microbes 🧫, genetics 🧬, disease 😷, biochemistry 🧪, and more! I hope you learn a lot! Feel free to leave comments, questions, and requests. Subscribe now for help studying biology.
You can also follow me on Twitter at @DrWhitneyHolden. Happy learning! 😊👍
Icon designed from surang from www.flaticon.com
Axenic Culture in Microbiology
Biology Professor (Twitter: @DrWhitneyHolden) teaches you about axenic cultures in Microbiology and how they can be made with the quadrant streak method from either broth or agar-based cultures.
Playlist to Videos about many different types of LAB MEDIA: ua-cam.com/play/PLjMo-ys5HQIZQ5EYCtqN9abio8LiSwoWl.html
Playlist to Videos about different MICROBIOLOGY LAB TESTS: ua-cam.com/play/PLjMo-ys5HQIaVpj8Ohn6jO7-8gm_remoj.html
Want a PDF of the final white board with all the answers written in? Check out my FREE NOTES here: tinyurl.com/BiologyProfessorNotes
Playlist to Videos about many different types of LAB MEDIA: ua-cam.com/play/PLjMo-ys5HQIZQ5EYCtqN9abio8LiSwoWl.html
Playlist to Videos about different MICROBIOLOGY LAB TESTS: ua-cam.com/play/PLjMo-ys5HQIaVpj8Ohn6jO7-8gm_remoj.html
Want a PDF of the final white board with all the answers written in? Check out my FREE NOTES here: tinyurl.com/BiologyProfessorNotes
Переглядів: 6 846
Відео
Quadrant Streak (Streak Plate Method)
Переглядів 6 тис.2 роки тому
Biology Professor (Twitter: @DrWhitneyHolden) teaches you about the goal of quadrant streaks, also known as the streak plate method, and HOW to do one correctly. Important skill for any Micro lab. Playlist to Videos about many different types of LAB MEDIA: ua-cam.com/play/PLjMo-ys5HQIZQ5EYCtqN9abio8LiSwoWl.html Playlist to Videos about different MICROBIOLOGY LAB TESTS: ua-cam.com/play/PLjMo-ys5...
How Bt Insectide Works
Переглядів 2 тис.2 роки тому
Biology Professor (Twitter: @DrWhitneyHolden) teaches you all about Bt insecticide: what it is, how it works, and why it is safe for humans. Also some brief discussion of Bt corn to end. Want a PDF of the final white board with all the answers written in? GET THE FREE STUDY NOTES here: tinyurl.com/BiologyProfessorNotes
Bile Esculin Agar (BEA Test)
Переглядів 5 тис.2 роки тому
Biology Professor (Twitter: @DrWhitneyHolden) teaches you about Bile Esculin Agar, its components/ingedients, and how it is used to distinguish Enterococcus from Streptococcus and other microbes. Playlist to Videos about many different types of LAB MEDIA: ua-cam.com/play/PLjMo-ys5HQIZQ5EYCtqN9abio8LiSwoWl.html Playlist to Videos about different MICROBIOLOGY LAB TESTS: ua-cam.com/play/PLjMo-ys5H...
XLD Agar (Xylose Lysine Deoxycholate Agar)
Переглядів 7 тис.2 роки тому
Biology Professor (Twitter: @DrWhitneyHolden) teaches you about XLD Agar (Xylose Lysine Deoxycholate Agar), its components/ingredients, and how it is used to distinguish Salmonella and Shigella with a hydrogen sulfide (H2S) indicator system. Playlist to Videos about many different types of LAB MEDIA: ua-cam.com/play/PLjMo-ys5HQIZQ5EYCtqN9abio8LiSwoWl.html Playlist to Videos about different MICR...
Pseudoalleles
Переглядів 5 тис.2 роки тому
Biology Professor (Twitter: @DrWhitneyHolden) teaches you all about pseudoalleles: what they are, how they work, how they originate, plus an example. Learn about genes and alleles here: ua-cam.com/video/n-VAMxlkolY/v-deo.html Learn about pseudogenes (NOT THE SAME as pseudoalleles) here: ua-cam.com/video/o8XRTFetsNE/v-deo.html Want a PDF of the final white board with all the answers written in? ...
Chytrid Fungus Life Cycle (Batrachochytrium dendrobatidis)
Переглядів 6 тис.2 роки тому
Biology Professor (Twitter: @DrWhitneyHolden) teaches you all about the life cycle of the chytrid fungus Batrachochytrium dendrobatidis, which causes the deadly disease chytridiomycosis in amphibians. Want a PDF of the final white board with all the answers written in? GET THE FREE STUDY NOTES here: tinyurl.com/BiologyProfessorNotes
Passive Immunity and Passive Inoculation
Переглядів 7312 роки тому
Biology Professor (Twitter: @DrWhitneyHolden) teaches you all about PASSIVE IMUNITY, including natural and artificial forms of passive immunity. PASSIVE INOCULATION is also described, including how it is distinguised from broader passive immunity. Want a PDF of the final white board with all the answers written in? GET THE FREE STUDY NOTES here: tinyurl.com/BiologyProfessorNotes
Akinetes
Переглядів 2,7 тис.2 роки тому
Biology Professor (Twitter: @DrWhitneyHolden) teaches you all about AKINETES - survival structures used by some cyanobacteria. Akinete characteristics and triggers will be discussed. Heterocysts are also briefly described. Link to 6-minute video on heterocysts: ua-cam.com/video/tYUg3h-RyWg/v-deo.html Want a PDF of the final white board with all the answers written in? GET THE FREE STUDY NOTES h...
Atherosclerosis Pathogenesis (LDL Oxidation, Macrophage Scavenger Receptors, Foam Cells, & Plaques)
Переглядів 8 тис.2 роки тому
Biology Professor (Twitter: @DrWhitneyHolden) reviews the process of plaque formation in atherosclerosis, including discussing how LDL is oxidized and then engulfed via macrophages via scavenger receptors, how foam cells form, and more. Want a PDF of the final white board with all the answers written in? DOWNLOAD FREE STUDY NOTES here: tinyurl.com/BiologyProfessorNotes
Arylomycin Antibiotics
Переглядів 5842 роки тому
Biology Professor (Twitter: @DrWhitneyHolden) teaches you all about a new class of antibiotics, arylomycins, with lesson on why they are important and how the work (their mechanism). The special synthetic arylomycin analog that has been in the news, G0775, will also be described. Want a PDF of the final white board with all the answers written in? GET THE FREE STUDY NOTES here: tinyurl.com/Biol...
Centrosomes vs. Centrioles
Переглядів 8 тис.2 роки тому
Biology Professor (Twitter: @DrWhitneyHolden) teaches students how to tell centrosomes and centrioles apart and remember which is which! Want a PDF of the final white board with all the answers written in? DOWNLOAD FREE STUDY NOTES here: tinyurl.com/BiologyProfessorNotes
Signal Peptidases
Переглядів 3,1 тис.2 роки тому
Biology Professor (Twitter: @DrWhitneyHolden) teaches you all about SIGNAL PEPTIDASES: what they are, what they do, why they potentially make a good antibiotic target, and more. SIGNAL PEPTIDE PEPTIDASES, a different but related type of protease, is also described. Want a PDF of the final white board with all the answers written in? GET THE FREE STUDY NOTES here: tinyurl.com/BiologyProfessorNotes
In the Nucleus: Nuclear Lamina, Nuclear Matrix, Nucleoplasm, etc.
Переглядів 6 тис.2 роки тому
Biology Professor (Twitter: @DrWhitneyHolden) reviews the structure of the nucleus, including discussing the structure and function of the nuclear lamina, nuclear matrix, nucleoplasm, nucleolus, and more! Want a PDF of the final white board with all the answers written in? DOWNLOAD FREE STUDY NOTES here: tinyurl.com/BiologyProfessorNotes
Viroid / Virusoid / Virus / Prion (PLUS 10 MORE RELATED VOCAB)
Переглядів 2,6 тис.2 роки тому
Biology Professor (Twitter: @DrWhitneyHolden) tells you all about the similarities and differences in viruses, virions, virusoids, viroids, prions, phages, prophages, proviruses, virulence, subviral agents, viral titer, and more! In total, over a dozen virus- and prion-related terms will be described. Want a PDF of the final white board with all the answers written in? GET THE FREE STUDY NOTES ...
Microfilament Formation (G actin vs. F actin)
Переглядів 5 тис.2 роки тому
Microfilament Formation (G actin vs. F actin)
Cytoskeleton: Microfilaments, Intermediate Filaments, Microtubules
Переглядів 3,1 тис.2 роки тому
Cytoskeleton: Microfilaments, Intermediate Filaments, Microtubules
Alleles vs. Genes (What is an allele? Plus HOMOZYGOTE vs. HETEROZYGOTE)
Переглядів 2,8 тис.2 роки тому
Alleles vs. Genes (What is an allele? Plus HOMOZYGOTE vs. HETEROZYGOTE)
Flippases and Floppases (and Scramblases)
Переглядів 5 тис.2 роки тому
Flippases and Floppases (and Scramblases)
Welcome to Biology Professor (Please Subscribe!)
Переглядів 7 тис.2 роки тому
Welcome to Biology Professor (Please Subscribe!)
Hi mama how much beautiful ur ❤😂
If i pass my exams today it'll be because of this lecture
Very informative. Loved the examples and corresponding pictures drawn. Great video!
I am raising 2 of these right now, one just emerged, I was so worried because the cocoon looked the same (hiary) I was worried that it didn't finish the process but it looks great so far ! 1 more to go
Thank you Ma'am. This was handy in preparing for my chemistry class presentation.
thank youuu
you should know that it's also possible to use agar plates instead of agar slants👍
I didn’t know Pam from The Office teaches biology.
❤
I put 20 poke berries into a jar with one cup of apple cider vinegar smash them all up and pour through a strainer to catch all the seeds. Now you have your juice of the berries in the apple cider vinegar pour one cup of organic honey into the juice store in the fridge and take 1 tsp when you are sick it is an amazing herb for wellness. You should always put just a small amount on the inside of your wrist for 15 minutes or so to make sure you are not allergic to the herb. Do this test for all herbs before using them. I am 71 years old and only use herbs for my good health I use no meds of any kind at this time. I make a Poke Root tincture also I have never used gloves ever. Reply
Heyy mam WhatsApp no
We harvest the leaves only, cook it and dump the water three times. It's is Absolutely delicious. We leave it growing in our yard but cut back all the flowers to prevent "berries." Kids, birds, and raccoons will eat them and nobody wants that!
I like how you are teach
Thank u sincerely for the clear and thorough explanation ❤
Thank you mam
I live in SE Georgia, USA and I have two of these growing near my house. Today, I took a look at the larger one, which now is over 7 feet tall, and it's only June, 8th! I'm going to leave it alone to see how tall it will grow, and let the birds have their fill of the berries.
Mam sexy lag rahi ho
wth 1:45
From India
Thank you so much Whitney, you're exceptional. Rajeeve NZ
Impressed ❤
Hello I'm now a subscriber, I would like to take this opportunity to say thank you. You're an exceptional tutor. Kindest regards Rajeeve New Zealand
Many neet students form my clg used to watch ur videos (I'm a engineer so I don't know biology) now they are doctors
Can you please tell me mam, why did you divide 200 and 800 , why not multiply?
Nice video and well presented tutorial
You're the best madam
thanks ,very clear speech
Parabéns, eu fiz graduação em licenciatura em Ciências Biológicas, e nunca vi uma pessoa explicar tão bem sobre vírus, como você. Eu aprendi mais sobre vírus com você, do que com qualquer professor que eu tive na universidade.
Thanks Prof.. it was instructive and helpfull.. i hav seen avideo of pbs nova (Ancien earth. frozen earth) and (Snowball earth from..NatGeoDocum). .. when i saw the passage how cyanobacterie resist snowball period of earth without been extinct.+Akinets info.. your videos solve me the problem.. m.ua-cam.com/video/YOLbE8frMrM/v-deo.html Time.. 32:50 and 33:40...Picture of Akinets like you describe it.... loool.
thank you
Where you from maam
This is very insightful professor. Thank you so much
As far as I know, that part of the experiment where you mentioned about the auxotrophoc features, is attributed to Joshua Lederberg and Edward Tatum. When they mixed those two strains and yielded prototroph bacteria so the fact of combination in bacteria was approved.
WHAT DOES APLT MEAN ... FULL FORM OF APLT
most beautiful and helpful teacher ❤
This is what they’re teaching college students these days! Eat only what they feed you….👌
Thank you I was watching Dr stone an I wanted to know how the six on the iss did the bottleneck and made the village now I know thanks.
I miss when I raised these. Such cute caterpillars
Thanks a lot from India
Thank you so muchhhhhhhhh
Can you tell me how i publish my master thesis on pubmed
She sounds like "Vanelopee" from "Wreck it Ralph" !!! Isn't she??
Thanks, you got me through my phd!
Your work is very clear madam
Tried shaking this morning lets see if it works.
Watching all your videos on bacteria the night before my lab test, Thank You a bunch 🙏
good 👍
2:31
Thnx❤
Are you pregnant