Bacteria pH Requirements (acidophiles, neutrophiles, and alkaliphiles)

Biology Professor (Twitter: @DrWhitneyHolden) describes the 3 classifications of bacteria based on pH preferences, including acidophiles, neutrophiles, and alkaliphiles. Examples are given of places where you might find each class. Great for MCAT Biology Review!
For more information on how bacteria can be classified by oxygen preferences, see Biology Professor's video: • Bacteria Oxygen Requir...
For more information on how bacteria can be classified by temperature preferences, see Biology Professor's video: • Bacteria Temperature P...

[@taiwoshogbanmu9747]

Man, am in love with this professor. She's provided high yield information and saved me a lot of time reading textbooks.

[@boccaluppo930]

Thank you so much. Your explanation is clear and I love the pace of your speech. No background music yyyaaaaayyyy!

[@BiologyProfessor]

Thanks for watching :)

[@sinopino2812]

Good information to know. Thanks Professor !

[@lostbookx8464]

Brilliant! Subscribed! Thank you for your superb educational video! :)

[@BiologyProfessor]

Thanks for commenting :)

[@amberbenton7658]

Thank you so much for the great videos!

[@BiologyProfessor]

Glad you like them!

[@abhisheksingh-qo1mw]

Mam, please tell me how I can learn biology for very long time

[@yuvrajkote5918]

I m searching from many months for such problems. (in short i want to ask u about bacterial growth and prevention of cretain bactreia , and much more) If you can help me out with discussion onthat issues. I no one is as knowledgeable as person you are and biological studied one. so, your knowledge can help me make my search work go to a sucess.

[@virgotekcomputer]

hi doctor ... do you know about environmental enzymes (eco enzymes)? some say it can be used as a disinfectant or sanitizer. do you believe that?

[@BiologyProfessor]

I’ve heard it can be good to get rid of certain odors, but I don’t know how good it is actually disinfecting or sanitizing.

[@verararira9965]

I want to ask question, if bacillus subtilis was isolated from different sample, and it has different pH optimum to grow (i.e isolated from shrimpaste is 6, from fish souce is 8) why this happened? both of bacillus subtilis can grow pH 5-9. Can you please explain it and mention papers for it? thankyou in advance

[@BiologyProfessor]

I am not familiar with this and I can’t cite any papers. My assumption would be that different strains have evolved different optimal pH’s since they occupy such different niches.

[@virgotekcomputer]

hi doctor... will a lower ph for example ph 2,5 will kill any bacteria or virusses ?

[@BiologyProfessor]

Yes, a pH of 2.5 is much too low for certain types of bacteria. Many Neutrophiles and alkalilphiles will be killed at that pH.

[@virgotekcomputer]

@@BiologyProfessor will it kill covid-19 virus also ? i have purify water machine that able to produce ph 2,5

[@markovichglass]

@@virgotekcomputer water machines will produce acidic water, but with very low buffering agents. Therefore the pH shows acidic on a test, but doesnt have the acidity to actually kill covid19. Also, our stomach will buffer all water ingested to a low pH. To go thru the pyloric valve.....

[@abhisheksingh-qo1mw]

When I read any chapter first time, it is so joyfull and exciting but after some time I forget it and again when I try to revise it I feel very bored

[@doubleas2380]

lol