If you don't have one, you should consider doing an MCAT/DAT prep series. Your videos come highly recommended by many MCAT test-takers! Also, I showed my medical school professor & he said these are some of the best videos he's seen. Thank you!

@hasaniqbal5993

3 жыл бұрын

this comment needs more likes

@pinkpegasus6313

2 жыл бұрын

yes omg ^^ kind of like chad's prep!

pH vs pKa is like a battle between solution and molecule for a proton. If pH is higher than pKa, solution wins the proton. If the pKa is higher than the pH, the molecule wins the proton.

@johnnyace1300

3 жыл бұрын

to the top!

@momijithelesbianleftie6578

2 жыл бұрын

How barbaric! Such conflict. Can also see it as different states of equilibrium. Or like a dance between atoms, one moment there might be some EDM with a nice thicc bass playing, and all the hydrogen atoms are like total BASE sluts so the electrons wanna hang out with arginines, C, carbon atom instead because C stands for Cool as fuck. And when the environment is more acidic, like theres some GOA playing and everyone starts dancing far too much, the electrons return to sulfur. Because sulfur sells all the 'dangerous' chemicals the electrons wanna get high on.

@amaduconate5262

2 жыл бұрын

@@momijithelesbianleftie6578 😃😃😃😃 crazy analogy you got there. Probably the best definition/analogy about about pKa/pH equilibrium

I have NEVER watched a video on a subject that I struggled with and completely understood it in 8 minutes. You are so nice. Thank you.

Yep, I Love You! So articulate and informational.

Thank you so very much! You help me gather my ideas and organize them in a concise way. More people should know about you. Keep it up :D You're doing a great job at teaching

this was EXACTLY what I was looking for. thank you so much.

this was EXACTLY what I was looking for. thank you so much.You sir, are an amazing. Thank you so very much! You help me gather my ideas and organize them in a concise way. More people should know about you. Keep it up :D You're doing a great job at teaching

This is the most underrated science channel ever.

You sir, are an amazing explainer

Love your videos. Exceptional clarity.

Thank you so much for this video! Exactly what I needed!

Clear and concise thank you and God bless.

i was relooking all over for this vid just because i forgot to like it. thank you sir!

that was the best thing ive ever seen

Exactly what I needed - thank you

THIS MAN IS A GENIUS THANK YOU SO MUCH

Helpful. Thank you.

the best biochemestry videos!

nice & helpful lecture, thank you

amazing explanation!

Your lectures are very useful, but where I can find how to find pi value for single amino acid?

Thanks for teaching us, daddy.

Hi i just want to ask what happened to the benzene ring of tyrosine? Why it became cyclohexyl?

Thank you so much

u r just all I need for every subject🙏👍👍👍👌👏

thank you bro >> god bless U

Sir, what you did in the last structure? Are u inonised the both amino gp or the single one???

thank you so much!!!!

Forgot your double bonds in the second tyrosine drawn :)

Thanks you for explained 🤍. But what if the Ph equal to Pka which side conjugated acid or base?

Excellent, very clear. Preparing me for biochem at UCLA- thank you :-)

any one know the answer please reply me. If we are doing electrodialysis for peptide separation so which are made during this electrodialysis?

I wish he teaches us in our school.

What happens with serin?

Hi, great video. But what's with Histidine, how do you explain that it is positively charge at normal physiological pH?

@Rose-mg5eq

3 жыл бұрын

It is not positively charged at physiological pH, that is a misconception. It is the only basic amino acid that is actually not positive at pH 7

i saw that the pI of cysteine is 5.07 and now i'm so confused. does this mean it is usually deprotonated at physiological pH? cause pH>pI means the molecule is mostly deprotonated. right? does anyone know? i've watched so many youtube videos looking for the answer.

Thanks

Can someone help me with this question?? I can't seem to figure it out! Please and thank you!! How many functional groups does the peptide MDFGRKCDE have that can be titrated?

@LegitPRZ

5 жыл бұрын

6 functional groups. You basically have to look at all of the side chains which can be ionized. In this case: Aspartate (Dx2), Arginine (R), Lysine (K), Cysteine (C), and Glutamate (E)

Why is the pKa of the alpha carboxyl less than the pKa of the side chain carboxyl?

@Annechenyac

3 жыл бұрын

there is a mutual repulsion between the positive charge on the alpha- NH3+ and the H+ on the alpha carboxyl group that make the pKa of the alpha carboxyl group lower. lower pKa = easier to lose H atom. hope this helps.

Why is Tyrosine found within the protein away from water? my understanding is that it can hydrogen bond at physiological pH?

@sentinel7778

7 жыл бұрын

navid darayan Yeah you're right. This is what i've understood too. Tyrosine is supposed to be a polar amino acid due to the OH present that can form Hydrogen bonds.

@DapaChrons

4 жыл бұрын

you prolly don't need this information anymore, but for anyone who looks at your question: tyrosine has a massive six-member carbon ring that keeps it hydrophobic. But its oxygen makes it slightly more polar than phenylalanine for example. If you look at tyrosine's structure compared with serine, threonine, asparagine, glutamine, cysteine, etc., it will make sense

How come the general pka value for the carboxyl + amine terminus is 3.1 or 8? My textbook has a variety of pka values for each of the 20 amino acid. Can anyone explain the difference?

@kimberlysanchez6693

Жыл бұрын

did you find out the difference? having the same issue/question

Good

You didn't clear what is actually Pka value? 😐😯

If the last two structures are clear to some one then pls explain those structures to me also

Hi ! I would like to inform you about your vedio presentation that some tecneque for better perspective... Actually when you delevior the presentation so three points you should keep it on your mind that your writing partent must be clear for vesual empire and other common person and the secont point to mention on here that when you explaination about any topic so if you need the rough work by methamically assess ways so do it and make the coloum on the right side by best ways for better understand what are you explaination . right now i am attending your presentation about the topic ( amino acids and proteins from physics aspects ) so firstly i am extemly sorry about your writing I am hardly saw your written work if some one new to join your channel so how can he / she learn by these ways by verbaly you are doing nice job. thanks for delevers such choose the very effectic topic . thanks

what is the average length of magnesium? Im really struggling to find an answer

The best that what YOU are. :)

I LOVE YOU

love you

@AKLECTURES

5 жыл бұрын

India ❣️💓💞💕America ❣️💖💕❣️💞💖

why we have to sit in the classroom and listen to someone who doesn’t know what it is talking about.lol.

he is talking TOO FAST. i watched some parts at the speed of 0,75

marry me

I hate chemistry