You are literally a magician. I have studied this chapter twice from two different teachers but each time I failed to understand it. But just after watching you video of only 40 minutes I not only understand but also I have memorized some of the important points. You are literally the best teacher!
You're actually incredible! I'm currently homeschooling and I've been struggling with this topic for a while now but you explained it perfectly, thank you very much ma'am.
literally my entire class too watches her and make notes from her, when the teacher was checking the notebooks she saw the resemblance and asked us where we made these notes from lol, she even suggested that we watch her videos in class and shell just help us with the ppsss
9:58 When you say 70s ribosomes are present in eukaryotes. That’s specifically in the organelles such as mitochondria or chloroplast. These organelles were thought to be free living bacteria or organisms or basically prokaryotic cells, that originated before eukaryotic cells. These cells then later on went inside eukaryotic cells and now they are existing in symbiosis. This is related to the endosymbiotic theory. It’s a significant part there in the textbook. Prokaryotes exclusively consists of 70s ribosomes, so prokaryotic type of organelles existing inside our cells basically mean we(eukaryotes) would have 70s ribosomes as well. Not in our nucleus directly though, our nucleus exclusively consists of 80s ribosomes. But in the organelles such as mitochondria and chloroplasts which were believed to be free living prokaryotes.
*our nucleoli produces rRNA, that makes 80S ribosomes, which exist in the cytoplasm and RER. Not in the nucleus. Yes to all the rest. If the exam asks about 70S ribosomes existing in eukaryotes, the ans is still YES.
@@behlogy Ah thanks. Are you still making vids, if you are just a request to maybe include a small backstory or maybe just mention all the related information in the specific context. I think that’ll help a lot in revising and memorizing as well. Thank you.
I know this is quite late but I have a question; during the production and secretion of protein, the protein content is secreted out of the vesicle through exocytosis. At 25:12 when you were explaining how a white blood cell digests a bacterium cell, the soluble debris is also excreted out thru exocytosis. So, my question is this: are the substances secreted thru exocytosis always protein or can they be different substances?
Cytoplasm includes all stuff and liquid inside the cell. Cytosol, just liquid in the cell but not the nucleus. Nucleoplasm, liquid and stuff in the nucleus, including DNA. Not including the nuclear membrane All 3 terms are found in textbook and exams so they were introduced here.
Nice videos but I still don’t understand why mitochondria appear in different shapes in electron micrographs. Can you please explain it more to me? Thanks you so much 🙏
Bcs mitochondria divides by binary fission so there's a variety of sizes... Then when the cell is freeze-dried and then cut to be viewed under the electron microscope, it could be cut at different angles as well, so we are looking at diff 2D shapes of the same 3D shapes...
u look soo young i thought u were a graguated student or sth but the u said "my students" i was shoook btw this video was very helpful tysm! ps: love the Big hero 6 referance lol
