The nucleus | Cells | MCAT | Khan Academy
HTML-код
- Опубликовано: 26 мар 2015
- Visit us (www.khanacademy.org/science/he...) for health and medicine content or (www.khanacademy.org/test-prep/...) for MCAT related content. These videos do not provide medical advice and are for informational purposes only. The videos are not intended to be a substitute for professional medical advice, diagnosis or treatment. Always seek the advice of a qualified health provider with any questions you may have regarding a medical condition. Never disregard professional medical advice or delay in seeking it because of something you have read or seen in any Khan Academy video.
Watch the next lesson: www.khanacademy.org/test-prep...
Missed the previous lesson? www.khanacademy.org/test-prep...
MCAT on Khan Academy: Go ahead and practice some passage-based questions!
About Khan Academy: Khan Academy offers practice exercises, instructional videos, and a personalized learning dashboard that empower learners to study at their own pace in and outside of the classroom. We tackle math, science, computer programming, history, art history, economics, and more. Our math missions guide learners from kindergarten to calculus using state-of-the-art, adaptive technology that identifies strengths and learning gaps. We've also partnered with institutions like NASA, The Museum of Modern Art, The California Academy of Sciences, and MIT to offer specialized content.
For free. For everyone. Forever. #YouCanLearnAnything
Subscribe to Khan Academy’s MCAT channel: / @khanacademymcatprep
Subscribe to Khan Academy: ruclips.net/user/subscription_...
Ribosomes are assembled in the cytoplasm, not the nucleolus. The nucleolus produces ribosomal subunits, but these must be exported into the cytoplasm through nuclear pores in order to be assembled in the cytoplasm into fully functioning ribosomes.
Christie Lovat yes this is what I read in my textbook as well. Is he wrong or are there different circumstances in which some ribosomes are manufactured inside the nucleus? Please answer
I just looked this up on Google - "The nucleolus makes ribosomal subunits from proteins and ribosomal RNA, also known as rRNA. It then sends the subunits out to the rest of the cell where they combine into complete ribosomes. Ribosomes make proteins; therefore, the nucleolus plays a vital role in making proteins in the cell." So I think he got ribosomal subunits confused with ribosomes.
@@ShinySephiroth1 Thank you!
❤
sweet,simple and effective explanation. Great! Thanks for helping me in my class presentation,my topic was nucleus and its functions. :)
Thank you! It helped me a lot!
" The nucleus is surrounded by a system of two concentric membranes, called the inner and outer nuclear membranes. The outer nuclear membrane is continuous with the endoplasmic reticulum, so the space between the inner and outer nuclear membranes is directly connected with the lumen of the endoplasmic reticulum."
Very well explained. Thanks a ton!
that was amazing!! Thanks so much!!!
Explained perfectly! Thank you!
Great video, very clear, thank you
Very well explained, it would have been good though if you had explained what are the substances and molecules that interact with the nucleus such as CO2, Oxygen among other bunch of stuff that i'm actually looking for.
BlackhawkX02 CO2 and Oxygen, do not interact with the nucleus. Doing so will oxidize the DNA. The only reason it’s safe in the body is because Oxygen and CO2 are either being carried by globular proteins or ions (only CO2 which is Bicarbonate). When it enters the cell it will be transported in vesicles and used for whatever is required.
that was amazing thanks so much
great video, Thank you
Very Good
the explanation was quite detailed!
Thanks great
OM NAMAHSHIVAYA
thanks
Thankkkkk uuuuu
Great !!
Thank you
amazing
khan academy is the
best
nice explanation.
Thank You
Great
Thanks, amazing explain but what about chromatin network?
thank you ❤❤
very good video, thanks!
floora khadija p
push the button
Thanks
what is function GIT?
I wonder if and how a spike protein can enter the nucleus to create more spike proteins etc
Good
Can you please make a video on Cytoplasm?
Good video man (Y)
What would YOU buy for the nucleolus’ birthday - money is not an issue! What could make my nucleoli genuinely happy?
why does your voice sound like Ian Somerhalder's voice?? im so weirded out lol i see damon salvatore teaching me citology
Lol yeah I just watched vampire diaries and I was just about to comment the same thing
Thought the same they sound very similar although Ian has a more deep accent!
fuck everyone else, i respect you Khan Academy!
so its basically a little pacman generator in a pacman maze
Can a nucleus movement occur in cell....?
nope, proteins anchor the nucleus in its place
what is RNA ?
Ribo Nucleic Acid
This was very helpful! Although, why did he make so many mistakes while talking?
because he's a human?
and human errors happen!
Plz reply
what does non-compartmentlized mean? 0:57
Guys help!🙂
Looking at the nucleus, you can see it is enclosed by a membrane .
We say that the nucleus is compartmentalized because it is separated from the other organelles by the membranes.
Am I seeing things, or is the nucleus wiggling on the inside?
WHy do I hear Joe Rogan the whole video lol
smh read the description guys and don't complain
Not satisfied. Please describe it in more details
Parul Agarwal z
not much explanation
Not good
The continual verbal mishaps made this video one of the harder ones to watch from Khan Academy. I homeschool and use KA on a daily basis, but this particular video leans towards a poorer quality because of the man speaking. Please replace this with a more eloquent lecturer.
Not everyone can be perfect like you, Jennifer.
Damn u a hater 😂
She is not perfect no one is but I agree
of course she isn't. she "homeschools" her kids.
not to gooooood!
Seek Christ Jesus YHVH God :)
Allahu akbar